Use DBCS fields in the Open Query File (OPNQRYF) command

These topics discuss the use of double-byte character set (DBCS) fields for these Open Query File (OPNQRYF) command functions: wildcard, concatenation, and sort sequence functions. A table shows valid comparisons for DBCS fields through the OPNQRYF command.

• Use the wildcard function with DBCS fields
  The wildcard (%WLDCRD) function with a double-byte character set (DBCS) field differs depending on whether the function is used with a bracketed-DBCS field or a DBCS-graphic field.
• Compare DBCS fields through the Open Query File (OPNQRYF) command
  When comparing two fields or constants, fixed-length fields can be compared to variable-length fields as long as the types are compatible.
• Use concatenation with DBCS fields through the Open Query File (OPNQRYF) command
  When using the Open Query File (OPNQRYF) concatenation function, the i5/OS™ licensed program assigns the resulting data type based on the data types of the fields being concatenated. When double-byte character set (DBCS) fields are included in a concatenation, the resulting data type is generally the same as concatenated fields in a logical file, with some slight variations.
• Use sort sequence with DBCS
  When a sort sequence is specified, no translation of the double-byte character set (DBCS) data is done. Only SBCS data in DBCS-either or DBCS-open fields is translated. UCS2 data is translated.