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Status Under review
Workspace Db2 for z/OS
Created by Guest
Created on Aug 3, 2022

For Dynamic Plan Stability, Only store the actual SQL statement in STMTTEXT column

While reviewing the SQL statements in SYSDYNQRY.STMTTEXT column, extra characters are added to the end of the SQL. This requires extra processing when comparing to the REAL SQL-text. In some cases, but not all, a compare like the following is needed:


AND CAST ( SUBSTR(S.STMTTEXT,1,(LENGTH (Q.SQLTEXT))

) AS VARCHAR(32000))

= CAST ( SUBSTR(Q.SQLTEXT,1,(LENGTH (Q.SQLTEXT))

) AS VARCHAR(32000))


AND LENGTH (Q.SQLTEXT)+ 1 =

LOCATE ( X'00', S.STMTTEXT)


In this case, SQLTEXT stores the real SQL statement, and STMTTEXT stores the SQL plus additional characters concatenated at the end.


Needed By Not sure -- Just thought it was cool