Inconsistent USING clauses

Having data types changing at each execute is no longer supported.

Important: This issue applies to non-Informix databases only.

Before version 2.00, it was possible to execute a prepared statement with the variable list changing at each EXECUTE statement:

DEFINE var1 DECIMAL(6,2)
DEFINE var2 CHAR(10)
DEFINE var3 DATE
PREPARE st1 FROM "INSERT INTO tab1 VALUES ( ?. ?, ? )"
EXECUTE st1 USING var1, var2, var3
EXECUTE st1 USING var2, var3, var1   -- different order = different data types

The database interface of version 2.00 has been rewritten for better performance. Having data types changing at each execute is no longer supported.

Error -254 will be raised if different data types are used in subsequent EXECUTE statements (with the same statement name).