InterSystems IRIS TSQL Code 8157 All the queries in a query expression co

In this post, you’ll learn about the SQL error code 8157 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform

Error Code :

8157

Reason for the Error code 8157 in InterSystems IRIS DBMS

All the queries in a query expression containing a UNION operator must have the same number of expressions in their select lists.

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