Xerox 6180N Using LCDS Print Description Language - Page 187

Using logical processing TABLE command: points to note • In an unmasked comparison (using only the CONSTANT parameter of the TABLE command), characters in the string constant that correspond positionally to those in the input data string are tested for absolute equality, one character at a time. • In a masked comparison (using the MASK parameter), before the comparison is done for each character position, the character in that position in the string constant is compared against the mask characters that are specified by the user. If a match is found, the corresponding data character is ignored, or is tested only for the type indicated by the mask character. TABLE command examples Following are some examples of the TABLE command. Example 1 In the sample TABLE commands below, the identifiers T1, T2, and T3 are each referenced by a CRITERIA command. T1: TABLE CONSTANT=('$$//'); T2: TABLE CONSTANT=('//JOB ','//EXEC'); T3: TABLE CONSTANT=(120)'*'; Example 2 The following example illustrates the use of the MASK parameter to determine whether a particular field in a data record contains one of several different six character serial number formats. Possible formats are: xx999x, x999x9, and 99x999. In this example, x represents any alphabetic character, and 9 represents any numeric character. If the input code type is EBCDIC, the VOLUME command includes TCODE=EBCDIC. The TABLE command to find the format x999x9 within the input data stream would look like: T1: TABLE MASK CONSTANT=('@%%%@%'); Using LCDS Print Description Language 3-7