first_value ( value anyelement ) → anyelement → anyelementReturns
value evaluated at the row that is the first row of the window frame.first_value
Returns value evaluated at the row that is the first row of the window frame.
English manual coverage begins with PostgreSQL 7.1. Source history and runtime observations have their own recorded version boundaries.
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Definition PG 18
Returns
value evaluated at the row that is the first row of the window frame.Signatures and overloads
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center · PostgreSQL 18 · wiki-repair-20261023:11acdeb6accfb7498df3df1d8ce00dcbb12ff75d73415cfb75eb088fb5df47dd
Text language: en · wiki-repair-20261023:11acdeb6accfb7498df3df1d8ce00dcbb12ff75d73415cfb75eb088fb5df47dd