>I have a multi-detail band report. The target alias for band 2 (child band) is using an index tag on, say ORDER_NO. This is necessary for the SET RELATION statement of the parent alias (band 1) to work. But I want the report to show the items in the band 2 in a certain order (not just random order). For example, say I want the order to be by the PK value (ORDER_PK). I thought that I could create index tag on expression STR(ORDER_NO,6) + STR(ORDER_PK,6). I am not sure this will work and if it does, will it slow down the execution?
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>Any suggestions, please?

If the fields are integer, you can also use BINTOC function instead of STR.