Returns value evaluated at the row that is offset rows before the current row within the partition; if there is no such row, instead returns default (which must be of a type compatible with value). Both offset and default are evaluated with respect to the current row. If omitted, offset defaults to 1 and default to NULL.
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value evaluated at the row that is offset rows before the current row within the partition; if there is no such row, instead returns default (which must be of a type compatible with value). Both offset and default are evaluated with respect to the current row. If omitted, offset defaults to 1 and default to NULL.lag ( value anycompatible [, offset integer [, default anycompatible ]] ) → anycompatible → anycompatibleReturns
value evaluated at the row that is offset rows before the current row within the partition; if there is no such row, instead returns default (which must be of a type compatible with value). Both offset and default are evaluated with respect to the current row. If omitted, offset defaults to 1 and default to NULL.Full definition and evidence JSON
center · PostgreSQL 18 · wiki-repair-20261023:3a624abf9d79693182d04de9fcd562246e1b356baed798c441c9a2eb7d81dd0a
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