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Asked: 2026-05-16T14:01:11+00:00

I have two tables with similar columns. I would simply like to select both

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I have two tables with similar columns. I would simply like to select both tables, one after another, so that if I have ‘x’ rows on table1 and ‘y’ rows on table2, I’d get ‘x + y’ rows.

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  1. Editorial Team

    You would use UNION [ALL] for this. The tables don’t need to have the same column names but you do need to select the same number of columns from each and the corresponding columns need to be of compatible datatypes

    SELECT col1,col2,col3 FROM table1 
UNION ALL
SELECT col1,col2,col3 FROM table2

    UNION ALL is preferrable to UNION where there is a choice as it can avoid a sort operation to get rid of duplicates.

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