PLS-01454: No operator may be used with values of data type CHAR 

Cause: No operator may be used with values of data type "character string". Section 5.9, "value_expression", syntax rule 3, of X3H2 states: "If the data type of a primary is character string, then the value_expression shall not include any operators." This warning is placed on many functions in STDBASE that take CHAR arguments. 

Action: Refer to ANSI document ANSI X3.135-1992 for details. 

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