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All versions of PostgreSQL. Add an additional version-specific tag like postgresql-11 if that context is important.

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I have a table with timestamped data. t_stamp | col1 | col2 | col3 I want to update the value in say col3 based on values in col1 and col2 from the previous row in the table. By previous row I me …
asked May 13 by iamthebull
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You just need to use the FROM clause along with the query you already have: UPDATE test set col3 = prev_col1 + prev_col2 FROM ( SELECT t_stamp, lag(col1) OVER (ORDER BY t_stamp ASC) prev_col1 …
answered May 14 by iamthebull