index of dynamic query uses

I forgot how to use sql and Oracle dynamic index was linked.

For example I would like to have the query like this:

open v_search_results for
   'select * from T1, T2, ..., TN
    where T1.Col1 = ....
          and ...
          and TN.ColM like ....
    ';

(Please note that I have the query as a string inside the symbols apostrophs.)

Suggest I index on the columns of the tables T1, T2,..., TN.
These indices are used if someone now opens the cursor "v_search_results" variable to retrieve these data? Or the engine database ignores indexes in dynamic queries?

Execution plan will not change between static and dynamic SQL. It's all SQL for oracle. If the CBO decides if the use of the Index is the right thing to do so it will use.

Tags: Database

Similar Questions

Dynamic query using no PL/SQL. Is this Possible?

Hello world

According can the innery query result, we have a different external query I want to know if it is possible with the PL/SQL.

Example:

It's my inner query:

with q1 as
(select
cases where x > 500 then 0
1 other
end value
Of
Table 1)

This is where I stopped, I want to just run either of these queries according to the value.
I know that I can do using PL/SQL, but I want to know if we can do it with pure SQL

Something like that to happen:
What value = 0: run this query: select * from table2
What value = 1: run this query: select * from table2, table3 join using (col1)

Thank you.

VK

Sure. A bit far from updated him->

satyaki>
satyaki>
satyaki>select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE    10.2.0.3.0      Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production

Elapsed: 00:00:01.82
satyaki>
satyaki>
satyaki>select k.deptno,
  2         k.empno,
  3         k.ename,
  4         k.job,
  5         k.mgr,
  6         k.hiredate,
  7         k.sal,
  8         k.comm,
  9         null dname,
 10         null loc
 11  from emp k
 12  where &eid = 0
 13  union all
 14  select *
 15  from (
 16         select *
 17         from emp
 18         join dept
 19         using (deptno)
 20       )
 21  where &eid = 1;
Enter value for eid: 0
old  12: where &eid = 0
new  12: where 0 = 0
Enter value for eid: 0
old  21: where &eid = 1
new  21: where 0 = 1

    DEPTNO      EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM DNAME          LOC
---------- ---------- ---------- --------- ---------- --------- ---------- ---------- -------------- -------------
        10       9999 SATYAKI    SLS             7698 02-NOV-08      55000       3455
        10       7777 SOURAV     SLS                  14-SEP-08      45000       3400
        30       7521 WARD       SALESMAN        7698 22-FEB-81       1250        500
        20       7566 JONES      MANAGER         7839 02-APR-81       2975
        30       7654 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400
        30       7698 BLAKE      MANAGER         7839 01-MAY-81       2850
        10       7782 CLARK      MANAGER         7839 09-JUN-81       4450
        20       7788 SCOTT      ANALYST         7566 19-APR-87       3000
        10       7839 KING       PRESIDENT            17-NOV-81       7000
        30       7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0
        20       7876 ADAMS      CLERK           7788 23-MAY-87       1100

    DEPTNO      EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM DNAME          LOC
---------- ---------- ---------- --------- ---------- --------- ---------- ---------- -------------- -------------
        30       7900 JAMES      CLERK           7698 03-DEC-81        950
        20       7902 FORD       ANALYST         7566 03-DEC-81       3000

13 rows selected.

Elapsed: 00:00:00.32
satyaki>/
Enter value for eid: 1
old  12: where &eid = 0
new  12: where 1 = 0
Enter value for eid: 1
old  21: where &eid = 1
new  21: where 1 = 1

    DEPTNO      EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM DNAME          LOC
---------- ---------- ---------- --------- ---------- --------- ---------- ---------- -------------- -------------
        10       9999 SATYAKI    SLS             7698 02-NOV-08      55000       3455 ACCOUNTING     NEW YORK
        10       7777 SOURAV     SLS                  14-SEP-08      45000       3400 ACCOUNTING     NEW YORK
        10       7782 CLARK      MANAGER         7839 09-JUN-81       4450            ACCOUNTING     NEW YORK
        10       7839 KING       PRESIDENT            17-NOV-81       7000            ACCOUNTING     NEW YORK
        20       7566 JONES      MANAGER         7839 02-APR-81       2975            RESEARCH       DALLAS
        20       7876 ADAMS      CLERK           7788 23-MAY-87       1100            RESEARCH       DALLAS
        20       7788 SCOTT      ANALYST         7566 19-APR-87       3000            RESEARCH       DALLAS
        20       7902 FORD       ANALYST         7566 03-DEC-81       3000            RESEARCH       DALLAS
        30       7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0 SALES          CHICAGO
        30       7521 WARD       SALESMAN        7698 22-FEB-81       1250        500 SALES          CHICAGO
        30       7698 BLAKE      MANAGER         7839 01-MAY-81       2850            SALES          CHICAGO

    DEPTNO      EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM DNAME          LOC
---------- ---------- ---------- --------- ---------- --------- ---------- ---------- -------------- -------------
        30       7654 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400 SALES          CHICAGO
        30       7900 JAMES      CLERK           7698 03-DEC-81        950            SALES          CHICAGO

13 rows selected.

Elapsed: 00:00:00.24
satyaki>

Kind regards.

LOULOU.

Need help tuninng a dynamic query

Hello
We have following question
Select s.* s bose_sites.registration_crm_serial_number
R2 bose_sites.registration_crm_serial_number left on join
s.serialnr = r2.shipserialnr
where s.shipserialnr is null
and (r2.serialnr = ' 052378332000138AE' or (s.serialnr =)
(( "052378332000138AE" and s.shipserialnr is null))
which takes about 40 seconds to execute with the values highlighted in bold being dynamic values
If anyone can help reduce the run time on this request.
There are indexes created on table
INDEX_NAME INDEX_TYPE
------------------------------ ---------------------------
IDX_REG_CRM_SER_NUM_CPC NORMAL
IDX_REG_CRM_SER_NUM_SHIPDATE NORMAL
IDX_REG_CRM_SER_NUM_PARENT_ID NORMAL
IDX_REG_CRM_SER_NUM_ID NORMAL
is it possible that we can capture a dynamic query using DBMS_SQLTUNE
all suggestions will be useful.

Hello

You have one table here

-------------------------------------------------------------------------------

Schema name: SYS

SQL ID: cf2875zz4q4nd

SQL text: select s.* bose_sites.registration_crm_serial_number s

R2 bose_sites.registration_crm_serial_number left on join

s.serialnr = r2.shipserialnr

where s.shipserialnr is null

and (r2.serialnr = '052378332000138AE' or (s.serialnr =

S.shipserialnr and "052378332000138AE" is null))

-------------------------------------------------------------------------------

then why don't you go for a simple query

HTH

Index of feature based using SYS_XQSUBSTRAFT

running on 11.2.0.2
I was wondering if this could be a recommended approach to use SYS_XQSUBSTRAFT in a FBI to satisfy a xmlquery using substring-after on a column in a xmlquery? I test, and the optimizer uses the index, but don't know if I'll run into problems in later versions of the Oracle, if/when xmlparser and rewrite engine is updated?
I am selecting from the relational tables using fn:collection (with xmltype xml binary column) and must instr of relational columns in the context of xmlquery... running an explain plan on my query revealed that substring-after has been rewritten to call the SYS_XQSUBSTRAFT function.
Thanks for the tips

I was wondering if this could be a recommended approach to use SYS_XQSUBSTRAFT in a FBI to satisfy a xmlquery using substring-after on a column in a xmlquery?

Well, initially I would have said it's a bad idea, because Oracle has always insisted on not depend on the underlying implementation.

However, it's OK to use XMLQuery in a FBI, like this:

SQL > create table sample_data (str varchar2 (7));

Table created.

SQL > start

2

3 insert into sample_data values (' ABC 123' ");

4 insert into sample_data values ("XYZ-123'");

5 insert into sample_data values (' ABC-456' ");

6 insert into sample_data values (' ABC-789' ");

7

8 end;

9.

PL/SQL procedure successfully completed.

SQL > commit;

Validation complete.

SQL > create index sample_data_ix1 on sample_data)

() 2 xmlcast

3 xmlquery ('substring-after($str, "-")"incidentally as 'str' content return str)

4 as varchar2 (4000)

5    )

6 );

The index is created.

SQL >

SQL >

SQL > set lines 200

SQL > define pages 100

SQL > set autotrace on explain

SQL > select xmlquery)

2 ' for $i in fn:collection("oradb:/DEV/SAMPLE_DATA") / ROW

3 where substring-after($i/STR, "-") = "123".

4 return $i"

5 content of return

(6) as a result

7 double;

RESULT

------------------------------------------------------------------------------------------------

ABC-123 XYZ-123

Execution plan

----------------------------------------------------------

Hash value of plan: 2484218877

------------------------------------------------------------------------------------------------

| ID | Operation | Name | Lines | Bytes | Cost (% CPU). Time |

------------------------------------------------------------------------------------------------

|   0 | SELECT STATEMENT |                 |     1.       |     2 (0) | 00:00:01 |

|   1. GLOBAL TRI |                 |     1. 2007 |            |          |

|   2.   TABLE ACCESS BY INDEX ROWID | SAMPLE_DATA |     1. 2007 |     2 (0) | 00:00:01 |

|* 3 |    INDEX RANGE SCAN | SAMPLE_DATA_IX1 |     1.       |     1 (0) | 00:00:01 |

|   4. QUICK DOUBLE |                 |     1.       |     2 (0) | 00:00:01 |

------------------------------------------------------------------------------------------------

Information of predicates (identified by the operation identity card):

---------------------------------------------------

3 - access (SYS_XQSUBSTRAFT("STR",'-') = '123')

Note

-----

-dynamic sample used for this survey (level = 2)

And the funny thing is that Oracle has in fact already rewritten index function:

SQL > select dbms_metadata.get_ddl ('INDEX', 'SAMPLE_DATA_IX1') of double;

DBMS_METADATA. GET_DDL ('INDEX', 'SAMPLE_DATA_IX1')

--------------------------------------------------------------------------------

CREATING INDEX 'DEV '. "' SAMPLE_DATA_IX1 ' ON 'DEV '. "" SAMPLE_DATA "(SYS_XQSUBSTRAFT ("))

((STR','-'))

PCTFREE, INITRANS 10 2 MAXTRANS 167 COMPUTE STATISTICS

STORAGE (INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645)

PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS USER_TABLES 1, DEFAULT FLASH_CACHE

FAILURE BY DEFAULT CELL_FLASH_CACHE)

TABLESPACE 'USERS '.

so I guess that your approach is OK, in principle.

Now, I'm wondering no doubt creating an XML related on a pure relational table index.

Have you thought about using SQL/XML XMLElement, XMLAgg etc. instead of fn:collection() features and send it to your main XQuery?

Collection of the dynamic query

Hi All-

I'm trying to get the value of the collection through the dynamic query but I am facing some problem please let me know that I hurt.

Created a function like below to run the dynamic query to select statement

create or replace FUNCTION rfunGetColumnValue (
              ColumnName VARCHAR2,
              TableName  VARCHAR2,
              DefaultValue OUT VARCHAR2,
              Criteria VARCHAR2)
       RETURN VARCHAR2
IS
       ReturnValue VARCHAR2 (32767 byte) ;
       Stmt        VARCHAR2 (32767 byte) ;
BEGIN
       stmt := 'begin        
select '|| ColumnName || ' into  :1  from table(:2) ' ||NVL
       ( Criteria, ' ') ||
       '       
Fetch First Row only ;        
EXCEPTION                                   
WHEN OTHERS THEN                                          
:2 := SQLERRM;
end;'
       ;
       dbms_output.put_line (stmt) ;
       EXECUTE IMMEDIATE stmt USING OUT ReturnValue, OUT DefaultValue;
       --select Valueinto into Returnvalue from dual;
       RETURN ReturnValue;
END;

Now, I created a folder in the Package

create or replace PACKAGE Collection_PKG
is
type Bank_rec is RECORD
(
SNO           NUMBER(10),    
BANKID        NUMBER(5),    
BANKNAME       VARCHAR2(50),    
BANKSC         VARCHAR2(50),    
ADDEDIT       varchar2(1),    
COMPID        number(5),    
ISBULK        number(1),    
ROWNO         number(10),    
ERROR         VARCHAR2(500)  
);


TYPE Bank_tbl IS TABLE OF Bank_rec;
--type Bank_cur is ref cursor return Bank_rec;


end Collection_PKG;

end Collection_PKG;
end Collec
tion_PKG;

Now, when I'm Trying the code below

DECLARE
  V_EXECQUERYPARAM XMLTYPE:= XMLTYPE('<QueryParam>
  <BankXML>
    <Bank>
      <BankID>0</BankID>
      <BankSC><![CDATA[RCB]]></BankSC>
      <BankName><![CDATA[Royal challenger Bank]]></BankName>
      <IsBulk>0</IsBulk>
      <AddEdit>A</AddEdit>
    </Bank>
  </BankXML>
</QueryParam>');
BEGIN
 Rspbanksave(
    v_SPParamList => V_EXECQUERYPARAM  );


END;

create or replace PROCEDURE rspBankSave (
              v_SPParamList XMLTYPE DEFAULT NULL)
IS
       V_Addedit VARCHAR2 (1 CHAR) ;
       Bank_tbl Collection_PKG.BANK_TBL := Collection_PKG.BANK_TBL () ;
BEGIN
       
       SELECT Row_number () OVER (ORDER BY 1),
              XT.BankID,
              XT.BankName,
              XT.BankSC,
              XT.AddEdit,
              v_CompID,
              XT.IsBulk,
              CAST (0 AS NUMBER (5)),
              CASE
                     WHEN MBank.BankID IS NOT NULL
                     THEN
                            CASE
                                   WHEN XT.BankSC     = MBank.BankSC
                                      AND XT.BankName = MBank.BankName
                                   THEN 'R104|Entry Already Exist,R114|Short Code Already Exist'
                                   WHEN XT.BankSC = MBank.BankSC
                                   THEN 'R114|Short Code Already Exist'
                                   WHEN XT.BankName = MBank.BankName
                                   THEN 'R104|Entry Already Exist'
                            END
                     ELSE NULL
              END Bulk collect
       INTO   Bank_tbl
       FROM   XMLTABLE ('//QueryParam/BankXML/Bank' PASSING v_SPParamList COLUMNS BankID NUMBER (5)
              PATH 'BankID', BankName                                                    VARCHAR2 (
              50) PATH 'BankName', BankSC                                                VARCHAR2 (
              50) PATH 'BankSC', AddEdit                                                 VARCHAR2 (
              1) PATH 'AddEdit', IsBulk                                                  NUMBER (1)
              PATH 'IsBulk') XT
       LEFT JOIN MBank
       ON     XT.BankID   != MBank.BankID
          AND v_CompID     = MBank.CompID
          AND (XT.BankSC   = MBank.BankSC
           OR XT.BankName  = MBank.BankName) ;
       v_TotalRowCount    := SQL%ROWCOUNT;






       IF (v_TotalRowCount > 0) THEN
              
                     BEGIN
                           V_Addedit:=rfunGetColumnValue (ColumnName=> 'Upper(AddEdit)',TableName=>'table(Bank_tbl)',DefaultValue=>'',Criteria =>'');
                     END;
                     --SQL Code here
              
       END IF;
       
END rspBankSave;

As I've suggested before:

To get the name of the table the column

and as others have:

Type global temporary Tables vs. table

If you give more context, more information about the bigger picture, more information about what you're trying to do and why you're going down the road you go down, you can return more useful information. But you seem reluctant to do.

For the moment, your recent posts seem to just raise the same type of question - why are you doing this?

The normal way to return data to a client is a refcursor.

It is the most effective way.

Not through collections that you seem to be put on the must-do approach.

Query using progressive relaxation take more time for execution

HI gurus,

I'm creating a query using the context and the progressive relaxation index

I had started using progressive relaxation after obtaining the forum entries {: identifier of the thread = 2333942}. With the help of progressive relaxation takes more than 7 seconds for each request. Is there a way we can improve the query performance?

 create table test_sh4 (text1 clob,text2 clob,text3 clob);

begin
   ctx_ddl.create_preference ('nd_mcd', 'multi_column_datastore');
   ctx_ddl.set_attribute
       ('nd_mcd',
        'columns',
        'replace (text1, '' '', '''') nd1,
         text1 text1,
         replace (text2, '' '', '''') nd2,
         text2 text2');
   ctx_ddl.create_preference ('test_lex1', 'basic_lexer');
   ctx_ddl.set_attribute ('test_lex1', 'whitespace', '/\|-_+');
   ctx_ddl.create_section_group ('test_sg', 'basic_section_group');
   ctx_ddl.add_field_section ('test_sg', 'text1', 'text1', true);
   ctx_ddl.add_field_section ('test_sg', 'nd1', 'nd1', true);
   ctx_ddl.add_field_section ('test_sg', 'text2', 'text2', true);
   ctx_ddl.add_field_section ('test_sg', 'nd2', 'nd2', true);
 end;

create index IX_test_sh4 on test_sh4 (text3)   indextype is ctxsys.context   parameters    ('datastore     nd_mcd   lexer test_lex1 section group     test_sg') ;

alter index IX_test_sh4 REBUILD PARAMETERS ('REPLACE SYNC (ON COMMIT)') ;-- sync index on every commit. 


SELECT SCORE(1) score,t.* FROM test_sh4 t WHERE CONTAINS (text3,  '
<query>
<textquery>
<progression>
<seq>{GIFT GRILL STAPLES CARD} within text1</seq>
<seq>{GIFTGRILLSTAPLESCARD} within nd1</seq>
<seq>{GIFT GRILL STAPLES CARD} within text2</seq>
<seq>{GIFTGRILLSTAPLESCARD} within nd2</seq>
<seq>((%GIFT% and %GRILL% and %STAPLES% and %CARD%)) within text1</seq>
<seq>((%GIFT% and %GRILL% and %STAPLES% and %CARD%)) within text2</seq>
<seq>((%GIFT% and %GRILL% and %STAPLES%) or (%GRILL% and %STAPLES% and %CARD%) or (%GIFT% and %STAPLES% and %CARD%) or (%GIFT% and %GRILL% and %CARD%)) within text1</seq>
<seq>((%GIFT% and %GRILL% and %STAPLES%) or (%GRILL% and %STAPLES% and %CARD%) or (%GIFT% and %STAPLES% and %CARD%) or (%GIFT% and %GRILL% and %CARD%)) within text2</seq>
<seq>((%STAPLES% and %CARD%) or (%GIFT% and %GRILL%) or (%GRILL% and %CARD%) or (%GIFT% and %CARD%) or (%GIFT% and %STAPLES%) or (%GRILL% and %STAPLES%)) within text1</seq>
<seq>((%STAPLES% and %CARD%) or (%GIFT% and %GRILL%) or (%GRILL% and %CARD%) or (%GIFT% and %CARD%) or (%GIFT% and %STAPLES%) or (%GRILL% and %STAPLES%)) within text2</seq>
<seq>((%GIFT% , %GRILL% , %STAPLES% , %CARD%)) within text1</seq>
<seq>((%GIFT% , %GRILL% , %STAPLES% , %CARD%)) within text2</seq>
<seq>((!GIFT and !GRILL and !STAPLES and !CARD)) within text1</seq>
<seq>((!GIFT and !GRILL and !STAPLES and !CARD)) within text2</seq>
<seq>((!GIFT and !GRILL and !STAPLES) or (!GRILL and !STAPLES and !CARD) or (!GIFT and !STAPLES and !CARD) or (!GIFT and !GRILL and !CARD)) within text1</seq>
<seq>((!GIFT and !GRILL and !STAPLES) or (!GRILL and !STAPLES and !CARD) or (!GIFT and !STAPLES and !CARD) or (!GIFT and !GRILL and !CARD)) within text2</seq>
<seq>((!STAPLES and !CARD) or (!GIFT and !GRILL) or (!GRILL and !CARD) or (!GIFT and !CARD) or (!GIFT and !STAPLES) or (!GRILL and !STAPLES)) within text1</seq>
<seq>((!STAPLES and !CARD) or (!GIFT and !GRILL) or (!GRILL and !CARD) or (!GIFT and !CARD) or (!GIFT and !STAPLES) or (!GRILL and !STAPLES)) within text2</seq>
<seq>((!GIFT , !GRILL , !STAPLES , !CARD)) within text1</seq>
<seq>((!GIFT , !GRILL , !STAPLES , !CARD)) within text2</seq>
<seq>((?GIFT and ?GRILL and ?STAPLES and ?CARD)) within text1</seq>
<seq>((?GIFT and ?GRILL and ?STAPLES and ?CARD)) within text2</seq>
<seq>((?GIFT and ?GRILL and ?STAPLES) or (?GRILL and ?STAPLES and ?CARD) or (?GIFT and ?STAPLES and ?CARD) or (?GIFT and ?GRILL and ?CARD)) within text1</seq>
<seq>((?GIFT and ?GRILL and ?STAPLES) or (?GRILL and ?STAPLES and ?CARD) or (?GIFT and ?STAPLES and ?CARD) or (?GIFT and ?GRILL and ?CARD)) within text2</seq>
<seq>((?STAPLES and ?CARD) or (?GIFT and ?GRILL) or (?GRILL and ?CARD) or (?GIFT and ?CARD) or (?GIFT and ?STAPLES) or (?GRILL and ?STAPLES)) within text1</seq>
<seq>((?STAPLES and ?CARD) or (?GIFT and ?GRILL) or (?GRILL and ?CARD) or (?GIFT and ?CARD) or (?GIFT and ?STAPLES) or (?GRILL and ?STAPLES)) within text2</seq>
<seq>((?GIFT , ?GRILL , ?STAPLES , ?CARD)) within text1</seq>
<seq>((?GIFT , ?GRILL , ?STAPLES , ?CARD)) within text2</seq>
</progression>
</textquery>
<score datatype="FLOAT" algorithm="default"/>
</query>',1) >0 ORDER BY score(1) DESC

Progressive relaxation works best when you select only a limited number of lines. If you retrieve ALL the rows that satisfy the query, then every step of easing should run without worrying.

If you collect - say - the first 10 results, then if the first step in the relaxation gives 10 results so there is no need to execute the next step (actually, due to the internal buffering, which won't be exactly true but he is theoretically correct).

The easiest way to proceed is to reformulate the query in the form

SELECT * FROM)
(Score select (1) SCORE, t.* FROM test_sh4 t WHERE CONTAINS (Text3, '))

...

(1) > 0 ORDER BY score (1) DESC
)
WHERE ROWNUM<=>

You have discovered that wildcards don't work too well, unless you use SUBSTRING_INDEX. I encourage you to avoid completely if possible, or push down much lower in the progressive relaxation. Usually, GIFT % is a useful term (matches GIFTS, GIFTED, etc.), DON % is generally more effective.

There are a lot of steps in your progressive relaxation. It you want to reduce the number of steps, you can change:

((GIFT and percent of the GRID and STAPLES % and CARD %)) in Text1
((GIFT and percent of the GRID and STAPLES % and CARD %)) in Text2

((CADEAU % et % de la GRILLE et AGRAFES % et CARTE %) * 2) within Text1 ACCUM ((GIFT and percent of the GRID and STAPLES % and CARD %)) in Text2

I don't know if it would have performance benefits - but it is worth trying to see.

dynamic query for package does not work
Dear members,

I have problems with a package in the creation and analysis of a dynamic query in the WHERE clause. Here is an example of what I'm trying to do:

PROCEDURE test_status_proc)
wtd_cursor ON cur_type
date_1 IN date
date_2 IN DATE
status in VARCHAR2,
flag in VARCHAR2)

IS

status_sql VARCHAR2 (250): = NULL;
flag_sql Varchar2 (100): = NULL;

BEGIN

Status of the IF = 'A' THEN
lv_status_sql: = 'A ';
lv_flag_sql: = 'Y ';
END IF;
Status of the 'I' = IF THEN
lv_status_sql: = 'A ';
lv_flag_sql: = 'n';
END IF;

Status of the 'R' = IF THEN
lv_status_sql: = "R";
lv_flag_sql: ='* ';
END IF;

Status of the IF = n THEN
lv_status_sql: = 'n';
lv_flag_sql: ='* ';
END IF;

IF status_code = 'IRN' THEN
"lv_status_sql: = '('' N'','' R'');
lv_status_sql: = lv_status_sql | ' OR (s.status = s.flag = "A" AND "N")';
lv_usecalc_sql: ='* ';
END IF;

Status of the = IF'* ' THEN
lv_status_sql: ='* ';
lv_flag_sql: ='* ';
END IF;

OPEN FOR Test_cursor

SELECT * from test_status s
WHERE
s.Daytime BETWEEN date_1 AND date_2
S.status AND decode (lv_status_sql,'* ', s.status, lv_status_sql)
S.flag AND decode (lv_flag_sql,'* ', s.flag, lv_flag_sql);

The problem I have is especially with the condition 'IRN '. The suite WHERE the part of the clause looks like the following in the lv_status_sql, but the query returns all the values:

-(', 'R') OR (s.status = 'A' AND s.flag =' only)

Any help would be much appreciated.

Kind regards
dreporter wrote:

Thanks for your reply and I completely understand your frustration. The problem is sometimes it is very difficult to describe all of the problem due to several reasons. Please take a look at my last post to see if that makes sense.

If you really need SQL dynamic - true dynamic SQL which includes dealing with dynamic number of bind variables - then DBMS_SQL are an excellent interface to use.

You can generate the dynamic SQL statement based on the question of whether the filter criteria is null (do not use) or not null (use as a predicate). For example
```
if someParam10 is not null then
  // someParam10 needs to be used as a filter predicate
  dynamicSQL := dynamicSQL || ' and some_col_10 = :someParam10 ';
end if;
```
This statement can then be analyzed using the DBMS_SQL interface. The binding of values uses the same logic that was used to create predicates. For example
```
if someParam10 is not null then
  // someParam10 is used and needs to be bound
  DBMS_SQL.Bind( myCursor, 'someParam10', someParam10 );
end if;
```
So, with this approach simplistic, you can easily create a dynamic SQL with variable predicates, dynamically bind these and run the slider.

Bind variables are used in the dynamic SQL statements, as there are very few threats of SQL injection. And the basic principles observed for shareable SQL creation - the same set of parameters not null to filter, will result in the same SQL statement, which allows the cursor within the Pool shared for this SQL statement to be reused.

So, technically, dynamic SQL is not a major problem (if used correctly). The major problem is that if really necessary to address the requirements of the business at hand.

The problem I have with many comments here want to use dynamic SQL statements, is that it is used as one would use a file i/o interface.

For file IO you want standard Open(), Read(), Write() and Close() calls. And you, the appellant, simply pass the name of the file and the data to write or to receive the data read.

Similarly, these posters want to use SQL to open a table and read and write the data column - and do it by calling simply (and dynamically) by specifying the name of the table and column. Approaches to dynamic SQL based on one such concept is wrong. And shows that much of the ignorance of what a RDBMS is and how to use an RDBMS.

apostrophe in dynamic query

Hi all;

Can u please help me on the following dynamic query code? I know that I'm missing the single quote around 2 dates, but could not understand where to put it! I tried to put 2 or 3 citations around 2 bind vars but in vain.

To create a dynamic query to simulate the following:
Select
EMPNO, ENAME, JOB, MGR, HIREDATE from emp where HIREDATE > = to_date('01/01/1981','MM/DD/YYYY') and DATERECRUTEMENT < = to_date('12/31/1982','MM/DD/YYYY');

dynamics of code:

declare
v_q varchar2 (4000);

Start

v_q: = "select ENAME, JOB, MGR, EMPNO, HIREDATE from emp;

V_q: = V_Q
|| ' where HIREDATE > = '
|| ' to_date (' |: P_DATE1 |) ',' ||''' MM/DD/YYYY "' | ' )'
|| "and HIREDATE < = '".
|| ' to_date (' |: P_DATE2 |) ',' ||''' MM/DD/YYYY "' | ' )';
-end of the sql
v_q: = v_q | « ; » ;

dbms_output.put_line ("East V_Q" |) V_Q);
end;

Thank you.

Zen

declare
    v_q varchar2(4000);
    v_rec emp%rowtype;
    v_cur sys_refcursor;
begin
    v_q :='select EMPNO,ENAME,JOB,MGR,HIREDATE from emp ';
    V_q := V_Q  || 'where HIREDATE >= to_date(:P_DATE1,''MM/DD/YYYY'') and HIREDATE <= to_date(:P_DATE2,''MM/DD/YYYY'')';
    dbms_output.put_line ('V_Q is ' || V_Q);
    open v_cur
      for v_q
      using '01/01/1981',
            '12/31/1982';
    loop
      fetch v_cur
        into v_rec.empno,
             v_rec.ename,
             v_rec.job,
             v_rec.mgr,
             v_rec.hiredate;
      exit when v_cur%notfound;
      dbms_output.put_line('empno = ' || v_rec.empno);
      dbms_output.put_line('ename = ' || v_rec.ename);
      dbms_output.put_line('job = ' || v_rec.job);
      dbms_output.put_line('mgr = ' || v_rec.mgr);
      dbms_output.put_line('hiredate = ' || to_char(v_rec.hiredate,'MM/DD/YYYY'));
      dbms_output.put_line('====================');
    end loop;
    close v_cur;
end;
/
V_Q is select EMPNO,ENAME,JOB,MGR,HIREDATE from emp where HIREDATE >=
to_date(:P_DATE1,'MM/DD/YYYY') and HIREDATE <= to_date(:P_DATE2,'MM/DD/YYYY')
empno = 7499
ename = ALLEN
job = SALESMAN
mgr = 7698
hiredate = 02/20/1981
====================
empno = 7521
ename = WARD
job = SALESMAN
mgr = 7698
hiredate = 02/22/1981
====================
empno = 7566
ename = JONES
job = MANAGER
mgr = 7839
hiredate = 04/02/1981
====================
empno = 7654
ename = MARTIN
job = SALESMAN
mgr = 7698
hiredate = 09/28/1981
====================
empno = 7698
ename = BLAKE
job = MANAGER
mgr = 7839
hiredate = 05/01/1981
====================
empno = 7782
ename = CLARK
job = MANAGER
mgr = 7839
hiredate = 06/09/1981
====================
empno = 7839
ename = KING
job = PRESIDENT
mgr =
hiredate = 11/17/1981
====================
empno = 7844
ename = TURNER
job = SALESMAN
mgr = 7698
hiredate = 09/08/1981
====================
empno = 7900
ename = JAMES
job = CLERK
mgr = 7698
hiredate = 12/03/1981
====================
empno = 7902
ename = FORD
job = ANALYST
mgr = 7566
hiredate = 12/03/1981
====================
empno = 7934
ename = MILLER
job = CLERK
mgr = 7782
hiredate = 01/23/1982
====================

PL/SQL procedure successfully completed.

SQL>

SY.

Sort on dynamic query problem!
Hello

I have a dynamic query written in pl/sql, when I check "Sort" for each field in the report attribute, error message resurrected as "ORA-01785: ORDER BY item must include the number of an expression in the SELECT list.
If I do not check sort, it works very well. In my applications, I need all the fields sorted by user, how do I solve this problem?

My query as below:

declare
Ask varchar2 (2000): = "select";
s_class varchar2 (1000);
cursor c1 is select * from demo_preference;
Start
for c1_val looping c1
If c1_val.login is not null then
query: query = | » ' || 'login ' | ',';
end if;
If c1_val.id is not null then
query: query = | » ' || 'id ' | ',';
end if;
.......
end loop;
query: = SUBSTR (query, 1, length (query)-1);

s_class: = ' (NVL (: P2_class, "%" |)) ''null%'') = ''%'' || "zero percent" OR
EXISTS (SELECT 1 FROM apex_collections WHERE collection_name = "P2CLASSCOL" AND class = c001))';

query: query = | » ' || ' from ming.reg_report_view1 where '.
|| ' ' || s_class;
Return (Query);
end;
Maybe the internal column used when you clicked the sort is not indicated in the report. Try to use aliases when you build the query string, it might help apex internally to identify a column even if its order is changed to another user. After all, the order of the columns in the code is dynamic and I assume that even the number of displayed columns can vary that could sort on a column that is identified by a number not valid.

How about somewhere, displaying the report query so that you know what is the exact query processing, it could give you the best information on the problem.

If the problem persists, use a collection that is extracted these record using the same query string, then replace the report to view the collection and then set the sort column on. This way Summit could get confused about which columns are being sorted and it would just sort on a c001... C050 column as if it were a string (Yes problems with the number of sort columns when you do this).

30EA2 - UNIT TESTING - value dynamic query truncating dates time.
So I use the installation of SQL Developer Unit Testing (very nice by the by) for a bit now and just recently upgraded to the latest beta version (3.0.02.83). Looks like a bug has been introduced by which the dynamic query of value are truncate all time of all DATE data type information.

This causes sadness serious for my current test cases and for me since I have to go back to the previous beta version :)
I noticed that, in the new 30EA2 parameter:

AddVMOption - Doracle.jdbc.mapDateToTimestamp = false

has been introduced by default in

[SQLDEveloper_install_dir]/sqldeveloper/bin/sqldeveloper.conf

Perhaps it has something to do with the behavior of incorrect date, try to remove the parameter and check again.

Help needed dynamic query

Hai I want dynamic query for framing

CREATE TABLE PI4 (COR varchar2(1),dep varchar2(3),cod_rc varchar2(2))

insert into pi4(dep,cod_rc) values('A01','5C')

insert into pi4(dep,cod_rc) values('DAC','5L')

HORN must be updated using dynamic query
as below

UPDATE PI4         
        SET
     PI4.COR = ’O’
WHERE
     PI4.DEP IN ('A01','A02','A03')
OR
     (
     PI4. dep IN ('DAC','FTS','G12')
     AND
     PI4.COD_RC = '5L'
     )

sql_stament is that the variable must be set to above code.

Pls help

S

Check below the code where the CO value is assigned dynamically to a p_cor variable

DECLARE
v_sql_statement VARCHAR2(32767) := NULL;
p_cor VARCHAR2(10) := 'O';
BEGIN
v_sql_statement := 'UPDATE PI4 SET PI4.COR ='||p_cor||' WHERE (PI4.DEP IN (''A01'',''A02'',''A03'') OR (PI4. dep IN (''DAC'',''FTS'',''G12'') AND PI4.COD_RC = ''5L''))';
EXECUTE IMMEDIATE v_sql_statement;
END;

If you do not need dynamic query to perform the update:

See the code below:

DECLARE
p_cor VARCHAR2(10) := 'O';
BEGIN
UPDATE PI4 SET PI4.COR =p_cor WHERE PI4.DEP IN ('A01','A02','A03') OR (PI4. dep IN ('DAC','FTS','G12') AND PI4.COD_RC = '5L'));
END;

Published by: AP on July 27, 2010 03:39

Published by: AP on July 27, 2010 04:51: end tag code included

Data model - dynamic query with parameters
Hi friends, is it possible to dynamically call a query using the parameters of the data models?

I try to have a BEEP report with data model something like that

Data model
Param1

Q1 = Select * from table 1
Q2 = Select * from table 2

If Param1 = X then
FinalQuery = Q1
On the other
FinalQuery = Q2
End

Any help is greately appreciated.

Thank you
SAI.
Take a look at the following:

http://www.Oracle.com/global/de/community/BIP/tipps/dynamische_queries/index_en.html

http://blogs.Oracle.com/XmlPublisher/files/BIPublisher_dynamic_column%20Blog.PDF

Thank you!

How to map Dynamic Query columns on variables of forms.
Dear all,
This is a correct code for executing a dynamic query and display data.
In this program that I have defined variables ("BOLD" of police) later I binds these with the query (in the second code "BOLD").

How I can map a column in the query, in which case I don't know that the surveyed fields type?

GetData PROCEDURE IS
EXEC_SQL connection_id. PORT;
cursorID EXEC_SQL. CURSTYPE;
sqlstr VARCHAR2 (1000);

loc_ename VARCHAR2 (30);
loc_eno NUMBER;
loc_hiredate DATE;

nIgn PLS_INTEGER;

BEGIN
connection_id: = EXEC_SQL. DEFAULT_CONNECTION;
cursorID: = EXEC_SQL. OPEN_CURSOR (connection_id);
--
-assuming empno is a primary key for the table emp, where clause ensures
-only 0 or 1 row is returned
--
sqlstr: = "select ename, empno, hiredate from emp;
-sqlstr: = sqlstr. 'where empno =' | input_empno;

EXEC_SQL. PARSE (connection_id, cursorID, sqlstr, exec_sql. V7);
-EXEC_SQL. Bind_variable (connection_id, cursorID, ': bn', input_empno);

EXEC_SQL. DEFINE_COLUMN (connection_id, cursorID, 1 loc_ename, 30);
EXEC_SQL. DEFINE_COLUMN (connection_id, cursorID, 2, loc_eno);
EXEC_SQL. DEFINE_COLUMN (connection_id, cursorID, 3, loc_hiredate);

--
-do execute_and_fetch after the analysis of the statement and calling bind_variable and
-If necessary define_column
--

nIgn: = EXEC_SQL. EXECUTE_AND_FETCH (connection_id, cursorID);
IF (nIgn = 0) THEN
TEXT_IO. Put_line ('not Rec');
ELSE IF (nIgn = 1) THEN
TEXT_IO. Put_line ('found an employee');

END IF;
--
-get the values of this line
--
WHILE (EXEC_SQL. FETCH_ROWS (connection_id, cursorID) > 0) LOOP
-nRows: = nRows + 1;
EXEC_SQL. COLUMN_VALUE (connection_id, cursorID, 1, loc_ename);
EXEC_SQL. COLUMN_VALUE (connection_id, cursorID, 2, loc_eno);
EXEC_SQL. COLUMN_VALUE (connection_id, cursorID, 3, loc_hiredate);

MESSAGE(loc_ename||) e '|| loc_eno | » '|| loc_hiredate);

END LOOP;
END IF;
END;
If you want to use EXEC_SQL and a dynamic query with unknown data types, but the known table name,
Then you can declare a rowtype variable
for example;
```
 NOT TESTED ---A ROUGH IDEA
m_emp_row employee_master%rowtype;
m_col_cnt number := 0;
So when you define collumn, create a procedure to find the column name and its width if it is varchar2 with respect to the column name .
   Find the column details from the user_tab_columns table ...
---------------------------------------------------------------------------------------------------------------------------------------------------
  while m_col_cnt < 3 loop
       m_col_cnt  := m_col_cnt +1;
       proc_find_col_name_width(p_qry ,p_col_no=>m_col_cnt , p_col_name,p_col_width);

      If p_col_name = 'EMPCODE' then
         EXEC_SQL.DEFINE_COLUMN(connection_id, cursorID, m_col_cnt , m_emp_row.empcode , p_col_width);
      elsif p_col_name ='EMPNAME' then
         EXEC_SQL.DEFINE_COLUMN(connection_id, cursorID, m_col_cnt , m_emp_row.empname , p_col_width);
       -----
        -------
       end if;
  end loop;

---------------------------------------------------------------------------------------------------------------------------------------------------
--Your procedure will look like this
 procedure proc_find_col_name_width(p_qry  varchar2,p_col_no number, p_col_name out varchar2,p_col_width out number) is 

 m_col_name varchar2(30);
 Cursor c1 is
 Select  data_length
 from user_tab_columns
 where table_name = 'yr_tab_name'
 and column_name = m_col_name;
 m_lastpos number ;
 m_nxtpos number ;
 Begin
  m_lastpos := instr(p_qry,',',1,p_col_no-1);
  m_nxtpos := instr(p_qry,',',1,p_col_no);
  If m_lastpos = 0 then --- if only one col
     m_col_name := substr(p_qry,instr(upper(P_QRY),'SELECT') + 6, instr(upper(P_QRY),'FROM') -1);
  else
       If m_nxtpos = 0 then ---if last column
             m_nxtpos := instr(upper(P_QRY),'FROM') -1;
       end if;

    m_col_name := substr(p_qry,m_lastpos+1,m_nxtpos);
  End if;
  m_col_name := ltrim(rtrim(m_col_name));
  open c1;
  fetch c1 into p_col_width;
  close c1;
  p_col_name := m_col_name;
END;
```
same thing you must apply when retrieving values using exec_sql.column_value
concerning
Dora

Published by: Dora on December 7, 2009 12:20

Published by: Dora on December 7, 2009 12:20

Dynamic query for a report
Hello
I have to generate a report that contains a query with the database link. This database link is not pre-programmed and would be taken up in another report which contans a link to this report. If this link value of database for the query could be. Can someone guide me hot to write a dynamic select statement so that I could add value of binding of database running.
Thank you

Salman
Hello Salman,

You must create a report of "query SQL (PL/SQL function body return SQL query. If you create a normal report of SQL query (using any SQL statement you like - example 1 SELECT FROM DUAL), you can then change the Type of report to this parameter.

Once this is done, you can then create a string that will build the SQL query, you must - what is done when entering the parameter Source in the region in the region to replace the PL/SQL code. How this string is constructed depends on where your data is and so on, but it's just a case of gettnig correct information and concatenated into a single string that forms the SELECT statement.

For example:
```
DECLARE
 vTABLE VARCHAR2(100);
 vSQL VARCHAR2(1000);
BEGIN
 vTABLE := 'MYTABLE@OTHERDB';
 vSQL := 'SELECT * FROM ' || vTABLE;
 RETURN vSQL;
END;
```
The PL/SQL above to build a string:
```
SELECT * FROM MYTABLE@OTHERDB
```
who then returned to Apex to generate the report. Also you should probably select the option "use generic column names (analysis of query runtime only)" under this.

Andy

dynamic query send multiple values dynamically
Hi all

I'm trying to run a dynamic query. Is it possible to send dynamically deptno and ename?

declare
v_sql varchar2 (4000);
v_resultCol varchar2 (100): = 'ename ';
v_col varchar2 (100): = "deptno";
number of v_num: = 30;
number of v_count;
Start
-v_sql: = 'select'. : v_resultCol |' from emp where ' | : v_col | '= '|| : v_num;

v_sql: = ' select count (ename) from emp where deptno =: a ';

run immediately v_sql in v_count using v_num;
dbms_output.put_line (v_count);
end;
/

Thank you
You can not choose a column dynamically by passing as a bind value because the binding for the name of the column would be simply considered as a string, in this case a count of the a non-empty string would be the same as count (*), a separate of a non-empty string account would be 1, and an empty string County 0 , which is not a lot get you if you try to count the number of records with non-null to a column values.

As a dynamically selected column you must can dynamicaly would build the SQL, but opens you up to SQL Injection attacks:
```
DECLARE
  v_col varchar2(100) := 'null)+max((select empno from emp where ename=''CLARK'')';
  v_sql VARCHAR2(4000);
  v_count number;
begin
  v_sql := 'select count('||v_col||') from emp where deptno = :a';
  execute immediate v_sql into v_count using 30;
  dbms_output.put_line(v_count);
end;
/
```
a better approach would be to first make sure that the value of v_col is actually a column in the table:
```
DECLARE
  v_col varchar2(100) := 'null)+max((select empno from emp where ename=''CLARK'')';
  v_sql VARCHAR2(4000);
  v_count number;
begin
  begin
    select column_name into v_col from all_tab_cols
     where owner = 'SCOTT' and table_name='EMP' and column_name = v_col;
  exception when NO_DATA_FOUND then
    v_col := '*';
  end;
  v_sql := 'select count('||v_col||') from scott.emp where deptno = :a';
  execute immediate v_sql into v_count using 30;
  dbms_output.put_line(v_count);
end;
/ 
```
Use a box or decode statement in your selection to determine which column to use based on a variable binding:
```
DECLARE
  v_col varchar2(100) := 'COMM';
  v_sql VARCHAR2(4000);
  v_count number;
begin
  v_sql := 'select count(case :col_name '||
                        'when ''ENAME'' then ename '||
                        'when ''COMM'' then to_char(COMM) '||
                        'end) '||
             'from scott.emp where deptno = :a';
  execute immediate v_sql into v_count using v_col, 30;
  dbms_output.put_line(v_count);
end;
/
```
Published by: Sentinel on October 16, 2008 14:48

index of dynamic query uses

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