![WHILE statement [T-SQL]](arrow-right.gif){kind=icon}
Specifies error handling in an Embedded SQL program.
WHENEVER
{ SQLERROR | SQLWARNING | NOTFOUND }
… { GOTO label | STOP | CONTINUE | C code; }
identifier
These are examples of the WHENEVER statement:
EXEC SQL WHENEVER NOTFOUND GOTO done;
EXEC SQL WHENEVER SQLERROR
{
PrintError( &sqlca );
return( FALSE );
};
The WHENEVER statement is used to trap errors, warnings, and exceptional conditions encountered by the database when processing SQL statements. The statement can be put anywhere in an Embedded SQL C program, and does not generate any code. The preprocessor generates code following each successive SQL statement. The error action remains in effect for all Embedded SQL statements from the source line of the WHENEVER statement until the next WHENEVER statement with the same error condition, or the end of the source file.
The error conditions are in effect based on positioning
in the C language source file and not on when the statements are
executed.
The default action is CONTINUE.
WHENEVER is provided for convenience in simple programs. Most of the time, checking the sqlcode field of the SQLCA (SQLCODE) directly is the easiest way to check error conditions. In this case, WHENEVER would not be used. If fact, all the WHENEVER statement does is cause the preprocessor to generate an if ( SQLCODE ) test after each statement.
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