Notes on REXX

This topic discusses comments, REXX delimiters, case, continuation characters, and the concatenation operator.

For more information on SQL within REXX code, see Quotation marks.

Comments

Every REXX program must begin with a comment that contains the word REXX. REXX comments begin with the characters /* and end with */ as follows:

01 /* rexx ***************************************************************/

REXX delimiters

REXX uses the semicolon (;) as a clause delimiter that you can omit if the end of a line implies a delimiter.

Case

Uppercase and lowercase are not significant outside quoted strings.

Continuation characters

To continue a REXX statement, use a trailing comma, as follows:

'WHERE DBNAME' eqorlike ' ' 'dbnamex' ' ',
' AND TIMESTMP = (SELECT MAX(TIMESTMP) ' ,

Concatenation operator

To concatenate strings, use the || concatenation operator. The column headings require two lines. The concatenation operator is at the end of the first line as follows:

ipfd.top.9 = ' DBNAME CREATOR IXNAME PART USED SPACE'||,
' GB % GB DATE STATS';