Stored procedure parameter for update queries

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Can I pass a Table name aa column name as variables into a stored procedure, that would then do an SQL statement :
Update tableName set columnName='' ; ?

Posted 9-May-11 4:27am

KaRaMiLo

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Sandeep Mewara · Answer 1 · 2011-05-09T05:08:00

Solution 1

Yes you can. Using Exec sql query in a Stored Procedure.

1. Create a stored procedure
2. Keep an input parameter to it as "@TableName" & "@ColumnName"
3. Create a dynamic sql statement inside your SP
4. Create a parameter named "@dynamicSQL" as a string.
5. Set @dynamicSQL = 'Select '+@ColumnName+' from '+@TableName.
6. Now execute the dynamic sql: Exec @dynamicSQL

Try!

Posted 9-May-11 5:08am

Sandeep Mewara

Comments

KaRaMiLo 9-May-11 11:16am

i can't apply it on update statements

Sandeep Mewara 9-May-11 11:18am

Why not? Same theory applies for update or insert. You need to use SP though - which should not be an issue.

KaRaMiLo 9-May-11 11:23am

i keep getting this error :
ORA-06502: PL/SQL: numeric or value error: character string buffer too small

Sandeep Mewara 9-May-11 11:30am

Try & in place of +

For such things, you should always run the raw query first and check if it is working fine and returing result. If you still face issues, first fix the query and then try to code for it as suggested.

KaRaMiLo 9-May-11 11:37am

still not working and when i compile it nothing is wrong but when i run it that message keep coming