a constraint many
Thank you in advance.
I have a table below:
CREATE THE TABLE ACCTMGMT. TES_ANTIUNIQUE
(
SUPERVISOR, VARCHAR2 (10 BYTE),
COLLECTOR VARCHAR2 (10 BYTE),
VARCHAR2 (10 BYTE) COMMENTS
)
and I want to insert these records:
INSERT INTO ACCTMGMT. THE VALUES OF TES_ANTIUNIQUE ('SPV HAS ',' COLL 1', 'OK');
INSERT INTO ACCTMGMT. THE VALUES OF TES_ANTIUNIQUE ('SPV HAS ',' COLL 2', 'OK');
INSERT INTO ACCTMGMT. THE VALUES OF TES_ANTIUNIQUE ('SPV X ',' COLL 1', 'NOT GOOD');
A collector can have exactly a supervisor. A supervisor may have more than one collector.
Instead of relaxing, can we use another constraint for this one of many relationships?
Best regards
IB
Hello Indra,
Why don't you have collector and supervisor on different tables and primary key relationships?
S.Balraj
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< name point-descriptor = "employee" cache-mode = "simple" default = "true" >
< table name = "employee" id-column-name = "id" type = "primary" >
< property name = data type 'id' = 'chain' queryable = "true" / >
< property column-name = "FirstName" name = "FirstName" data type = 'string' queryable = "true" / >
< property column-name = "last_name" name = 'name' data type = 'string' queryable = "true" / >
< /table >
< table name = "employee_education" id-column-names = "employe_id" type = "multi" >
< property column-name = "degree_id" name = "degrees" of data type = "dΘfinir" component-type of item = 'education' queryable = "true" / >
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< name point-descriptor = "education" cache-mode 'simple' = >
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< table name = "employee_education" id-column-names = "degree_id" type = "multi" >
< property column-name = "employe_id" name = "employees" data type = "dΘfinir" component-type of item = "employee" queryable = "true" / >
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CREATE TABLE IF NOT EXISTS 'mydb '. "employee")
'id' VARCHAR (40) NOT NULL,
"first_name" NULL VARCHAR (45).
"last_name", NULL VARCHAR (45).
PRIMARY KEY ('id'))
ENGINE type = InnoDB;
-- -----------------------------------------------------
-Table 'mydb '. 'education '.
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS 'mydb '. 'education')
'employe_id' VARCHAR (40) NOT NULL,
'degree_id' VARCHAR (45) NOT NULL,
PRIMARY KEY ('employe_id', 'degree_id'))
ENGINE type = InnoDB;
-- -----------------------------------------------------
-Table 'mydb '. 'employee_education '.
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS 'mydb '. "employee_education")
'employe_id' VARCHAR (40) NOT NULL,
'degree_id' VARCHAR (40) NOT NULL,
PRIMARY KEY ('employe_id', 'degree_id'),
CONSTRAINT 'fk_degree_id '.
(FOREIGN KEY)
REFERENCES 'mydb '. 'education')
ON DELETE NO ACTION
ON UPDATE NO ACTION.
CONSTRAINT 'fk_employee_id '.
(FOREIGN KEY)
REFERENCES 'mydb '. "employee")
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE type = InnoDB;
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try {}
Repository employeeRepo = getEmployeeRepo();
MutableRepository mutableEmployeeRepo = (MutableRepository) employeeRepo;
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If (degreeLength! = 0) {}
< String > degreeList value = new HashSet (<>);
String [] degreeArr = getDegrees();
for (int i = 0; i < degreeLength; i ++) {}
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}
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}
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}
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System.out.println ("Exception occurred." + e.getMessage ());
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Thank you.
The degrees has the value of the education.
If you code should be replaced with:
If (degreeLength! = 0) {}
DegreeList value = new HashSet (); String [] degreeArr = getDegrees();
for (int i = 0; i)< degreelength;="" i++)="">
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Peace
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Ideally, I try to avoid creating new columns and keeping a minimum shutter adjustments. But I'm open to any suggestion. Thanks for your time and your thoughts.
-JamieI would create a procedure that creates a virtual with labels document, what is the multi_column_datatstore behind the scenes. Then I would like to use this procedure in a user_datastore, so the result is the same for several tables as a multi_column_datastore for a table. I would use auto_section_group or another type of Group of sections, so that you can search from WITHIN as with the multi_column_datastore. Please see the demo below.
SCOTT@orcl_11gR2> -- tables and data that you provided: SCOTT@orcl_11gR2> CREATE TABLE SUBMISSION 2 ( SUBMISSION_ID NUMBER(10) NOT NULL, 3 SUBMISSION_NAME VARCHAR2(100) NOT NULL 4 ) 5 / Table created. SCOTT@orcl_11gR2> CREATE TABLE ADVISOR_TYPE 2 ( ADVISOR_TYPE_ID NUMBER(10) NOT NULL, 3 ADVISOR_TYPE_NAME VARCHAR2(50) NOT NULL 4 ) 5 / Table created. SCOTT@orcl_11gR2> CREATE TABLE SUBMISSION_ADVISORS 2 ( SUBMISSION_ADVISORS_ID NUMBER(10) NOT NULL, 3 SUBMISSION_ID NUMBER(10) NOT NULL, 4 ADVISOR_TYPE_ID NUMBER(10) NOT NULL, 5 FIRST_NAME VARCHAR(50) NULL, 6 LAST_NAME VARCHAR(50) NULL, 7 SUFFIX VARCHAR(20) NULL 8 ) 9 / Table created. SCOTT@orcl_11gR2> INSERT ALL 2 INTO SUBMISSION (SUBMISSION_ID, SUBMISSION_NAME) 3 VALUES (1, 'Some Research Paper') 4 INTO SUBMISSION (SUBMISSION_ID, SUBMISSION_NAME) 5 VALUES (2, 'Thesis on 17th Century Weather Patterns') 6 INTO SUBMISSION (SUBMISSION_ID, SUBMISSION_NAME) 7 VALUES (3, 'Statistical Analysis on Sunny Days in March') 8 SELECT * FROM DUAL 9 / 3 rows created. SCOTT@orcl_11gR2> INSERT ALL 2 INTO ADVISOR_TYPE (ADVISOR_TYPE_ID, ADVISOR_TYPE_NAME) 3 VALUES (1, 'Department Chair') 4 INTO ADVISOR_TYPE (ADVISOR_TYPE_ID, ADVISOR_TYPE_NAME) 5 VALUES (2, 'Department Co-Chair') 6 INTO ADVISOR_TYPE (ADVISOR_TYPE_ID, ADVISOR_TYPE_NAME) 7 VALUES (3, 'Professor') 8 INTO ADVISOR_TYPE (ADVISOR_TYPE_ID, ADVISOR_TYPE_NAME) 9 VALUES (4, 'Associate Professor') 10 INTO ADVISOR_TYPE (ADVISOR_TYPE_ID, ADVISOR_TYPE_NAME) 11 VALUES (5, 'Scientist') 12 SELECT * FROM DUAL 13 / 5 rows created. SCOTT@orcl_11gR2> INSERT ALL 2 INTO SUBMISSION_ADVISORS (SUBMISSION_ADVISORS_ID, SUBMISSION_ID, ADVISOR_TYPE_ID, FIRST_NAME, LAST_NAME, SUFFIX) 3 VALUES (1,1,2,'John', 'Doe', 'PhD') 4 INTO SUBMISSION_ADVISORS (SUBMISSION_ADVISORS_ID, SUBMISSION_ID, ADVISOR_TYPE_ID, FIRST_NAME, LAST_NAME, SUFFIX) 5 VALUES (2,1,2,'Jane', 'Doe', 'PhD') 6 INTO SUBMISSION_ADVISORS (SUBMISSION_ADVISORS_ID, SUBMISSION_ID, ADVISOR_TYPE_ID, FIRST_NAME, LAST_NAME, SUFFIX) 7 VALUES (3,2,3,'Johan', 'Smith', NULL) 8 INTO SUBMISSION_ADVISORS (SUBMISSION_ADVISORS_ID, SUBMISSION_ID, ADVISOR_TYPE_ID, FIRST_NAME, LAST_NAME, SUFFIX) 9 VALUES (4,2,4,'Magnus', 'Jackson', 'MS') 10 INTO SUBMISSION_ADVISORS (SUBMISSION_ADVISORS_ID, SUBMISSION_ID, ADVISOR_TYPE_ID, FIRST_NAME, LAST_NAME, SUFFIX) 11 VALUES (5,3,5,'Williard', 'Forsberg', 'AMS') 12 SELECT * FROM DUAL 13 / 5 rows created. SCOTT@orcl_11gR2> -- constraints presumed based on your description: SCOTT@orcl_11gR2> ALTER TABLE submission ADD CONSTRAINT submission_id_pk 2 PRIMARY KEY (submission_id) 3 / Table altered. SCOTT@orcl_11gR2> ALTER TABLE advisor_type ADD CONSTRAINT advisor_type_id_pk 2 PRIMARY KEY (advisor_type_id) 3 / Table altered. SCOTT@orcl_11gR2> ALTER TABLE submission_advisors ADD CONSTRAINT submission_advisors_id_pk 2 PRIMARY KEY (submission_advisors_id) 3 / Table altered. SCOTT@orcl_11gR2> ALTER TABLE submission_advisors ADD CONSTRAINT submission_id_fk 2 FOREIGN KEY (submission_id) REFERENCES submission (submission_id) 3 / Table altered. SCOTT@orcl_11gR2> ALTER TABLE submission_advisors ADD CONSTRAINT advisor_type_id_fk 2 FOREIGN KEY (advisor_type_id) REFERENCES advisor_type (advisor_type_id) 3 / Table altered. SCOTT@orcl_11gR2> -- resulting data: SCOTT@orcl_11gR2> COLUMN submission_name FORMAT A45 SCOTT@orcl_11gR2> COLUMN advisor FORMAT A40 SCOTT@orcl_11gR2> SELECT s.submission_name, 2 a.advisor_type_name || ' ' || 3 sa.first_name || ' ' || 4 sa.last_name || ' ' || 5 sa.suffix AS advisor 6 FROM submission_advisors sa, 7 submission s, 8 advisor_type a 9 WHERE sa.advisor_type_id = a.advisor_type_id 10 AND sa.submission_id = s.submission_id 11 / SUBMISSION_NAME ADVISOR --------------------------------------------- ---------------------------------------- Some Research Paper Department Co-Chair John Doe PhD Some Research Paper Department Co-Chair Jane Doe PhD Thesis on 17th Century Weather Patterns Professor Johan Smith Thesis on 17th Century Weather Patterns Associate Professor Magnus Jackson MS Statistical Analysis on Sunny Days in March Scientist Williard Forsberg AMS 5 rows selected. SCOTT@orcl_11gR2> -- procedure to create virtual documents: SCOTT@orcl_11gR2> CREATE OR REPLACE PROCEDURE submission_advisors_proc 2 (p_rowid IN ROWID, 3 p_clob IN OUT NOCOPY CLOB) 4 AS 5 BEGIN 6 FOR r1 IN 7 (SELECT * 8 FROM submission_advisors 9 WHERE ROWID = p_rowid) 10 LOOP 11 IF r1.first_name IS NOT NULL THEN 12 DBMS_LOB.WRITEAPPEND (p_clob, 12, ''); 13 DBMS_LOB.WRITEAPPEND (p_clob, LENGTH (r1.first_name), r1.first_name); 14 DBMS_LOB.WRITEAPPEND (p_clob, 13, ' '); 15 END IF; 16 IF r1.last_name IS NOT NULL THEN 17 DBMS_LOB.WRITEAPPEND (p_clob, 11, ''); 18 DBMS_LOB.WRITEAPPEND (p_clob, LENGTH (r1.last_name), r1.last_name); 19 DBMS_LOB.WRITEAPPEND (p_clob, 12, ' '); 20 END IF; 21 IF r1.suffix IS NOT NULL THEN 22 DBMS_LOB.WRITEAPPEND (p_clob, 8, ''); 23 DBMS_LOB.WRITEAPPEND (p_clob, LENGTH (r1.suffix), r1.suffix); 24 DBMS_LOB.WRITEAPPEND (p_clob, 9, ' '); 25 END IF; 26 FOR r2 IN 27 (SELECT * 28 FROM submission 29 WHERE submission_id = r1.submission_id) 30 LOOP 31 DBMS_LOB.WRITEAPPEND (p_clob, 17, ''); 32 DBMS_LOB.WRITEAPPEND (p_clob, LENGTH (r2.submission_name), r2.submission_name); 33 DBMS_LOB.WRITEAPPEND (p_clob, 18, ' '); 34 END LOOP; 35 FOR r3 IN 36 (SELECT * 37 FROM advisor_type 38 WHERE advisor_type_id = r1.advisor_type_id) 39 LOOP 40 DBMS_LOB.WRITEAPPEND (p_clob, 19, ''); 41 DBMS_LOB.WRITEAPPEND (p_clob, LENGTH (r3.advisor_type_name), r3.advisor_type_name); 42 DBMS_LOB.WRITEAPPEND (p_clob, 20, ' '); 43 END LOOP; 44 END LOOP; 45 END submission_advisors_proc; 46 / Procedure created. SCOTT@orcl_11gR2> SHOW ERRORS No errors. SCOTT@orcl_11gR2> -- examples of virtual documents that procedure creates: SCOTT@orcl_11gR2> DECLARE 2 v_clob CLOB := EMPTY_CLOB(); 3 BEGIN 4 FOR r IN 5 (SELECT ROWID rid FROM submission_advisors) 6 LOOP 7 DBMS_LOB.CREATETEMPORARY (v_clob, TRUE); 8 submission_advisors_proc (r.rid, v_clob); 9 DBMS_OUTPUT.PUT_LINE (v_clob); 10 DBMS_LOB.FREETEMPORARY (v_clob); 11 END LOOP; 12 END; 13 /John Doe PhD Some Research Paper Department Co-Chair Jane Doe PhD Some Research Paper Department Co-Chair Johan Smith Thesis on 17th Century Weather Patterns Professor Magnus Jackson MS The sis on 17th Century Weather Patterns Associate Professor Williard Forsberg AMS Statistical Analysis on Sunny Days inMarch
Scientist PL/SQL procedure successfully completed. SCOTT@orcl_11gR2> -- user_datastore that uses procedure: SCOTT@orcl_11gR2> BEGIN 2 CTX_DDL.CREATE_PREFERENCE ('sa_datastore', 'USER_DATASTORE'); 3 CTX_DDL.SET_ATTRIBUTE ('sa_datastore', 'PROCEDURE', 'submission_advisors_proc'); 4 END; 5 / PL/SQL procedure successfully completed. SCOTT@orcl_11gR2> -- index (on optional extra column) that uses user_datastore and section group: SCOTT@orcl_11gR2> ALTER TABLE submission_advisors ADD (any_column VARCHAR2(1)) 2 / Table altered. SCOTT@orcl_11gR2> CREATE INDEX submission_advisors_idx 2 ON submission_advisors (any_column) 3 INDEXTYPE IS CTXSYS.CONTEXT 4 PARAMETERS 5 ('DATASTORE sa_datastore 6 SECTION GROUP CTXSYS.AUTO_SECTION_GROUP') 7 / Index created. SCOTT@orcl_11gR2> -- what is tokenized, indexed, and searchable: SCOTT@orcl_11gR2> SELECT token_text FROM dr$submission_advisors_idx$i 2 / TOKEN_TEXT ---------------------------------------------------------------- 17TH ADVISOR_TYPE_NAME AMS ANALYSIS ASSOCIATE CENTURY CHAIR CO DAYS DEPARTMENT DOE FIRST_NAME FORSBERG JACKSON JANE JOHAN JOHN LAST_NAME MAGNUS MARCH PAPER PATTERNS PHD PROFESSOR RESEARCH SCIENTIST SMITH STATISTICAL SUBMISSION_NAME SUFFIX SUNNY THESIS WEATHER WILLIARD 34 rows selected. SCOTT@orcl_11gR2> -- sample searches across all data: SCOTT@orcl_11gR2> VARIABLE search_string VARCHAR2(100) SCOTT@orcl_11gR2> EXEC :search_string := 'professor' PL/SQL procedure successfully completed. SCOTT@orcl_11gR2> SELECT s.submission_name, 2 a.advisor_type_name || ' ' || 3 sa.first_name || ' ' || 4 sa.last_name || ' ' || 5 sa.suffix AS advisor 6 FROM submission_advisors sa, 7 submission s, 8 advisor_type a 9 WHERE CONTAINS (sa.any_column, :search_string) > 0 10 AND sa.advisor_type_id = a.advisor_type_id 11 AND sa.submission_id = s.submission_id 12 / SUBMISSION_NAME ADVISOR --------------------------------------------- ---------------------------------------- Thesis on 17th Century Weather Patterns Professor Johan Smith Thesis on 17th Century Weather Patterns Associate Professor Magnus Jackson MS 2 rows selected. SCOTT@orcl_11gR2> EXEC :search_string := 'doe' PL/SQL procedure successfully completed. SCOTT@orcl_11gR2> / SUBMISSION_NAME ADVISOR --------------------------------------------- ---------------------------------------- Some Research Paper Department Co-Chair John Doe PhD Some Research Paper Department Co-Chair Jane Doe PhD 2 rows selected. SCOTT@orcl_11gR2> EXEC :search_string := 'paper' PL/SQL procedure successfully completed. SCOTT@orcl_11gR2> / SUBMISSION_NAME ADVISOR --------------------------------------------- ---------------------------------------- Some Research Paper Department Co-Chair John Doe PhD Some Research Paper Department Co-Chair Jane Doe PhD 2 rows selected. SCOTT@orcl_11gR2> -- sample searches within specific columns: SCOTT@orcl_11gR2> EXEC :search_string := 'chair' PL/SQL procedure successfully completed. SCOTT@orcl_11gR2> SELECT s.submission_name, 2 a.advisor_type_name || ' ' || 3 sa.first_name || ' ' || 4 sa.last_name || ' ' || 5 sa.suffix AS advisor 6 FROM submission_advisors sa, 7 submission s, 8 advisor_type a 9 WHERE CONTAINS (sa.any_column, :search_string || ' WITHIN advisor_type_name') > 0 10 AND sa.advisor_type_id = a.advisor_type_id 11 AND sa.submission_id = s.submission_id 12 / SUBMISSION_NAME ADVISOR --------------------------------------------- ---------------------------------------- Some Research Paper Department Co-Chair John Doe PhD Some Research Paper Department Co-Chair Jane Doe PhD 2 rows selected. SCOTT@orcl_11gR2> EXEC :search_string := 'phd' PL/SQL procedure successfully completed. SCOTT@orcl_11gR2> SELECT s.submission_name, 2 a.advisor_type_name || ' ' || 3 sa.first_name || ' ' || 4 sa.last_name || ' ' || 5 sa.suffix AS advisor 6 FROM submission_advisors sa, 7 submission s, 8 advisor_type a 9 WHERE CONTAINS (sa.any_column, :search_string || ' WITHIN suffix') > 0 10 AND sa.advisor_type_id = a.advisor_type_id 11 AND sa.submission_id = s.submission_id 12 / SUBMISSION_NAME ADVISOR --------------------------------------------- ---------------------------------------- Some Research Paper Department Co-Chair John Doe PhD Some Research Paper Department Co-Chair Jane Doe PhD 2 rows selected. SCOTT@orcl_11gR2> EXEC :search_string := 'weather' PL/SQL procedure successfully completed. SCOTT@orcl_11gR2> SELECT s.submission_name, 2 a.advisor_type_name || ' ' || 3 sa.first_name || ' ' || 4 sa.last_name || ' ' || 5 sa.suffix AS advisor 6 FROM submission_advisors sa, 7 submission s, 8 advisor_type a 9 WHERE CONTAINS (sa.any_column, :search_string || ' WITHIN submission_name') > 0 10 AND sa.advisor_type_id = a.advisor_type_id 11 AND sa.submission_id = s.submission_id 12 / SUBMISSION_NAME ADVISOR --------------------------------------------- ---------------------------------------- Thesis on 17th Century Weather Patterns Professor Johan Smith Thesis on 17th Century Weather Patterns Associate Professor Magnus Jackson MS 2 rows selected. -
My table has many constraints, but I want to load data into this table, so I have to disable constraints, so do we have a SINGLE command to disable all constraints, instead of one by one?
Thank youNo there is no universal constraint inability. What you can do, it's a loop around the data dictionary view and use dynamic SQL statements:
begin for all_cons in ( select table_name, constraint_name from user_constraints where constraint_type in ('U', 'P', 'R') ) loop execute immediate 'alter table '||all_cons||' disable constraint '||all_cons.constraint_name; end loop; end;Note that this fact that relational constraints. Remove the filter on CONSTRAINT_TYPE if you want to include check constraints as well.
Update
I agree with Sybrand warnings. You will need to make sure you are the only user of the database when you perform this loading.
Cheers, APC
Published by: APC on 28 March 2013 13:59
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What will happen if I do this?
ALTER table emp
Add primart key (employee_id, last_name);
It's going to be two primary keys in the table?
or what?987018 wrote:
What will happen if I do this?ALTER table emp
Add primart key (employee_id, last_name);It's going to be two primary keys in the table?
or what?It will come with an error, unless you change "primart' primary '.
If you do, you'll get a primary key that requires a combination of the two columns to be unique.
So, you can insert two rows with the same id of employee but different names! Not a good idea.
Simply use a code that is used as the primary key.
Note: you can have only one primary key for a table, but you can have many unique constraints.
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