PREPARE — prepare a statement for execution
PREPAREnameFROMstring
     PREPARE prepares a statement dynamically
     specified as a string for execution.  This is different from the
     direct SQL statement PREPARE, which can also
     be used in embedded programs.  The EXECUTE
     command is used to execute either kind of prepared statement.
    
prepared_nameAn identifier for the prepared query.
stringA literal C string or a host variable containing a preparable statement, one of the SELECT, INSERT, UPDATE, or DELETE.
char *stmt = "SELECT * FROM test1 WHERE a = ? AND b = ?"; EXEC SQL ALLOCATE DESCRIPTOR outdesc; EXEC SQL PREPARE foo FROM :stmt; EXEC SQL EXECUTE foo USING SQL DESCRIPTOR indesc INTO SQL DESCRIPTOR outdesc;
     PREPARE is specified in the SQL standard.