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If the amount of data is at-all reasonable, you could write a script which populates additional SQL tables whose purpose is to index the data that you receive from this most-peculiar application.   Create a suitable primary-key column even if you have to do it by hand, then scan through the data inserting rows in other tables that consist of break-downs of what is in the original data.   For example, two entries in an index-table for row #1 would specify that it contains 'AA' and 'BB'.   Once you have done this, now you can begin to do sensible queries against the data that you get.

A script to parse the original data stem-to-stern, inserting descriptive records in other tables, would be fairly easy to write and could accomplish its work with a single pass through the data.   Now, you no longer have to depend upon its weirdnesses.   I truly believe that you will never get a truly-satisfactory program from the approach that you are pursuing right now.   I daresay that the incoming data is full of special-cases and exceptions that would vex you endlessly.

In reply to Re: SQL queries from weird data by sundialsvc4
in thread SQL queries from weird data by Anonymous Monk

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