Replacements of the passes of the constraint are not made.

Hello

I adjusted the following piece of code pl/sql - in order to show what's wrong. The complete pack is great - it has some errors, I try to debug and modify.

It's so (as anonymous block) :

declare

TYPE columns_rec IS RECORD (c_name VARCHAR2 (32),)

c_type VARCHAR2 (32),

c_length number (4,0).

c_scale number (4,0).

c_null varchar (20));

TYPE cols_t IS TABLE OF THE columns_rec;

p_Pkcols cols_t;

p_nonPkcols cols_t;

l_allCols cols_t: = cols_t();

l_str varchar2 (4000);

p_prefix varchar2 (50): = 'FA_SITES_NEW.';

CURSOR c_pk is

SELECT c.column_name, data_type,

Decode (data_precision,

NULL, data_length,

TO_NUMBER(data_precision-data_scale)) data_length,.

data_scale,

Nullable

Of user_tab_columns c,.

user_constraints uc,

user_cons_columns cc

WHERE uc.owner = USER

AND uc.constraint_name = cc.constraint_name

AND c.table_name = cc.table_name

AND c.column_name = cc.column_name

AND uc.table_name = cc.table_name

AND uc.table_name = 'FA_SITES_NEW. '

AND constraint_type = 'P '.

ORDER BY cc.position;

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

CURSOR c_non_pk is

SELECT column_name, data_type,

Decode (data_precision,

NULL, data_length,

TO_NUMBER(data_precision-data_scale)) data_length,.

data_scale,

Nullable

C USER_TAB_COLUMNS

WHERE table_name = 'FA_SITES_NEW '.

AND NOT EXISTS)

SELECT 1 FROM user_constraints uc, user_cons_columns cc

WHERE uc.owner = cc.owner

AND uc.table_name = c.table_name

AND cc.column_name = c.column_name

AND uc.constraint_name = cc.constraint_name

AND uc.table_name = cc.table_name

AND constraint_type = 'P')

order by nullable;

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

CURSOR c_cons is

SELECT cc.column_name, c.constraint_name, c.search_condition,

Decode (c.constraint_type, 'P', 'Pk', 'U', 'Uk', 'R', 'Fk', 'Check') c_type

From user_constraints c,.

user_cons_columns cc

WHERE c.owner = USER

AND c.constraint_name = cc.constraint_name

AND c.table_name = cc.table_name

AND c.owner = cc.owner

AND c.table_name = 'FA_SITES_NEW. '

AND constraint_type in ('P', 'R', 'C', 'U')

ORDER BY decode (c.constraint_type, 'P', 1, 'U', 2, 3);

Start

Open c_pk;

collect the fetch c_pk in bulk in p_Pkcols;

close c_pk;

Open c_non_pk;

collect the fetch c_non_pk in bulk in p_nonPkcols;

close c_non_pk;

l_allCols: = p_PkCols p_nonPkcols union multiset;

FOR cfl_cons in c_cons

LOOP

IF upper (cfl_cons.c_type) = 'VERIFICATION' THEN

l_str: = cfl_cons.search_condition;

because me l_allCols.first... loop of l_allCols.Last

l_str: = replace (l_str, l_allCols (i) .c_name, p_prefix | l_allCols (i) .c_name);

dbms_output.put_line (l_str);

end loop;

END IF;

END LOOP;

end;

The script that creates the table is:

CREATE TABLE FA_SITES_NEW

(

AA              NUMBER(5)                     ,

CODE_CC VARCHAR2 (12-BYTE),

DESCR_CC VARCHAR2 (60 BYTE),

CODE_EGK VARCHAR2 (5 BYTE),

VARCHAR2 (80 BYTE) EGK,

CODE_THESIS VARCHAR2 (5 BYTE),

ADDRESS VARCHAR2 (100 BYTE),

TK VARCHAR2 (8 BYTE),

DATE OF VALIDDATE_FROM,

DATE OF VALIDDATE_TO,

VARCHAR2 (200 BYTE) NOTES,

LASTINSU VARCHAR2 (20 BYTE),

DATE OF LASTINSD,

LASTUPDU VARCHAR2 (20 BYTE),

DATE OF LASTUPDD,

CODE_CC_VC VARCHAR2 (15 BYTE) GENERATED ALWAYS AS ("000" |) ("' CODE_CC")

)

;

ALTER TABLE FA_SITES_NEW ADD)

CONSTRAINT FA_SITES_NEW_CHK

CHECK (validdate_from < = validdate_to));

Now the problem is - except that the constraint appears several times(let's leave it for now) - replacement is not done.

In other words, the constraint is "validdate_from < = validdate_to ' and I want to be replaced as FA_SITES_NEW.validdate_from < = FA_SITES_NEW.validdate_to (that's why I use l_str: = replace (l_str, l_allCols (i) .c_name, p_prefix | l_allCols (i) .c_name);).

Instead, the chain remains validdate_from < = validdate_to.

I also tried to do the replacement in a sql stmt ' select replace (l_str, l_allCols (i) .c_name, p_prefix |)» "l_allCols (i) .c_name) in double l_str", but to no avail.

Is it possible this minor change to the result?

NOTE: I use oraDb 11.2.

Thank you very much

SIM

I don't understand. Why do you want to include the name of table to the columns that are used inside the check constraint? This will make the invalid constraint if you rename the table. It seems much better to have the name of the column without a name to additional table.

The problem could be that the expression within the constraint uses lowercase column names, while your system column names select uppercase letters in the data dictionary. This is why replacing is not picking up the names.

Tags: Database

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