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DB2 SQL Query SELECT AS gives "SQL errorcode=-4460"



SQL queries fail with "Unknown column name" error in IBM Rational Integration Tester (RIT) of IBM Rational Test Workbench (RTW).


When running a SELECT AS in the SQL Query test action you see an error such as the following:

>[jcc][10150][10300][4.14.88] Invalid parameter: Unknown column name <column name>. ERRORCODE=-4460,SQLSTATE=null"


Newer DB2 JDBC drivers exhibit different behaviour when returning column names using the "AS" clause.
See this Information Center section:

ResultSetMetaData returns different values for the IBM Data Server Driver for JDBC and SQLJ Version 4.0

Resolving The Problem

There are two solutions to this.

  • Modify the physical database connection specification to use the old version of semantics by appending
    the useJDBC4ColumnNameAndLabelSemantics parameter:


  • Modify the query to use an expression in the column name:

    select <EXPRESSION> as MY_NAME from TABLE where ID=1

    For example, concatenate a blank with the column name:

    select COLUMN_NAME || '' as MY_NAME from TABLE where ID=1

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Document Information

Modified date:
29 September 2018