Before delivering the Shared CTE implementation change, the IBM i development team did a great job delivering flagging support for the IBM i 7.3 and 7.4 releases which makes it easy to use an SQL Plan Cache Snapshot or SQL Monitor to identify your SQL requests that might be impacted by this change.
Before updating your 7.4 Database Group PTF level or upgrading to IBM i 7.4 or 7.5, use the flagging support to identify which SQL statements on your system use a Shared CTE. Read More
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