SQL1724 error means?
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Failed to validate CASE expression
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Failed to execute UPDATE command
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Failed to calculate LIKE predicate pattern
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Failed to validate column list
SQL1724 indicates a validation failure for the column list specified in a SQL statement. This error occurs when the database cannot verify the existence, accessibility, or compatibility of columns referenced in a query.
Marked correct: Failed to validate column list. DB2 SQL1724N is documented as a command-line/utility-level error indicating a problem validating the column list specified for an operation (e.g., in a LOAD/IMPORT or similar utility invocation), as opposed to a run-time CASE-expression, UPDATE-execution, or LIKE-pattern failure, which would surface under different SQLCODEs. This is a narrow DB2 utility-message detail; I can't independently re-verify the exact IBM message text with full certainty, but the answer is internally consistent with how DB2's SQL1xxx utility message range is typically structured.