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Editorial Team
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Asked: 2026-06-12T13:51:46+00:00

I have a table that has a number of columns. For each row, I’d

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I have a table that has a number of columns. For each row, I’d like to select three columns (PAR_BOOK, PAR_PAGE, PAR_LINE) and concatenate the contents of those three columns into a new fourth column (APN).

So, if PAR_BOOK=0108, PAR_PAGE=291 and PAR_LINE=07, APN should be 010829107

Make sense?

But, I’m unsure of what query I should use to do this. I need the results stored back in the same table as it needs to be ultimately exported out as a csv to work with the program that’s going to map the data.

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1 Answer

  1. Editorial Team

    Assuming your fourth column is already in the table, you would use the following update query:

    UPDATE YourTable
SET APN = CONCAT(PAR_BOOK, PAR_PAGE, PAR_LINE)

    If your fourth column is not present in the table yet, you should use the ALTER TABLE statement to add it first before running the UPDATE statement:

    ALTER TABLE YourTable
ADD APN VARCHAR(256) NULL
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