| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Opaleye.FunctionalJoin
Description
Alternative APIs to inner, left, right, and full outer joins. See Opaleye.Join for details on the best way to do joins in Opaleye.
Documentation
Arguments
| :: (Default IfPP fieldsResult fieldsResult, Default Unpackspec fieldsL fieldsL, Default Unpackspec fieldsR fieldsR) | |
| => (fieldsL -> fieldsR -> fieldsResult) | Calculate result row from input rows for rows in the right query satisfying the join condition |
| -> (fieldsL -> fieldsResult) | Calculate result row from input row when there are no rows in the right query satisfying the join condition |
| -> (fieldsL -> fieldsR -> Field SqlBool) | Condition on which to join |
| -> Select fieldsL | Left query |
| -> Select fieldsR | Right query |
| -> Select fieldsResult |
Arguments
| :: (Default IfPP fieldsResult fieldsResult, Default Unpackspec fieldsL fieldsL, Default Unpackspec fieldsR fieldsR) | |
| => (fieldsL -> fieldsR -> fieldsResult) | Calculate result row from input rows for rows in the left query satisfying the join condition |
| -> (fieldsR -> fieldsResult) | Calculate result row from input row when there are no rows in the left query satisfying the join condition |
| -> (fieldsL -> fieldsR -> Field SqlBool) | Condition on which to join |
| -> Select fieldsL | Left query |
| -> Select fieldsR | Right query |
| -> Select fieldsResult |
Arguments
| :: (Default IfPP fieldsResult fieldsResult, Default Unpackspec fieldsL fieldsL, Default Unpackspec fieldsR fieldsR) | |
| => (fieldsL -> fieldsR -> fieldsResult) | Calculate result row from input rows for rows in the left and right query satisfying the join condition |
| -> (fieldsL -> fieldsResult) | Calculate result row from left input row when there are no rows in the right query satisfying the join condition |
| -> (fieldsR -> fieldsResult) | Calculate result row from right input row when there are no rows in the left query satisfying the join condition |
| -> (fieldsL -> fieldsR -> Field SqlBool) | Condition on which to join |
| -> Select fieldsL | Left query |
| -> Select fieldsR | Right query |
| -> Select fieldsResult |