| unColumn | Opaleye.Internal.Column |
| UnExpr | Opaleye.Internal.HaskellDB.PrimQuery |
| Union | |
| 1 (Data Constructor) | Opaleye.Internal.PrimQuery |
| 2 (Data Constructor) | Opaleye.Internal.Sql |
| union | Opaleye.Binary, Opaleye |
| UnionAll | |
| 1 (Data Constructor) | Opaleye.Internal.PrimQuery |
| 2 (Data Constructor) | Opaleye.Internal.Sql |
| unionAll | Opaleye.Binary, Opaleye |
| unionAllExplicit | Opaleye.Binary, Opaleye |
| unionExplicit | Opaleye.Binary, Opaleye |
| Unit | Opaleye.Internal.PrimQuery |
| unit | |
| 1 (Function) | Opaleye.Internal.PrimQuery |
| 2 (Function) | Opaleye.Internal.Sql |
| UnOp | Opaleye.Internal.HaskellDB.PrimQuery |
| unOp | Opaleye.Internal.Column |
| UnOpFun | Opaleye.Internal.HaskellDB.Sql.Default |
| UnOpOther | Opaleye.Internal.HaskellDB.PrimQuery |
| UnOpPostfix | Opaleye.Internal.HaskellDB.Sql.Default |
| UnOpPrefix | Opaleye.Internal.HaskellDB.Sql.Default |
| UnOpType | Opaleye.Internal.HaskellDB.Sql.Default |
| Unpackspec | |
| 1 (Type/Class) | Opaleye.Internal.Unpackspec, Opaleye.Adaptors, Opaleye |
| 2 (Data Constructor) | Opaleye.Internal.Unpackspec |
| unpackspecColumn | Opaleye.Internal.Unpackspec |
| unpackspecField | Opaleye.Internal.Unpackspec, Opaleye.Adaptors, Opaleye |
| unpackspecMaybeFields | Opaleye.Internal.MaybeFields, Opaleye.MaybeFields, Opaleye.Adaptors, Opaleye |
| unsafeCase_ | Opaleye.Internal.Column |
| unsafeCast | Opaleye.Internal.Column, Opaleye.Column, Opaleye |
| unsafeCoerceColumn | Opaleye.Internal.Column, Opaleye.Column, Opaleye |
| unsafeCoerceField | Opaleye.Field, Opaleye |
| unsafeCompositeField | Opaleye.Internal.Column, Opaleye.Column, Opaleye |
| unsafeEq | Opaleye.Internal.Column |
| unsafeFromField | Opaleye.RunSelect, Opaleye |
| unsafeFromFieldRaw | Opaleye.Internal.RunQuery |
| unsafeGt | Opaleye.Internal.Column |
| unsafeIfThenElse | Opaleye.Internal.Column |
| unsafePgFormatTime | Opaleye.Internal.PGTypes |
| UnsafeTag | Opaleye.Internal.Tag |
| unsafeUnTag | Opaleye.Internal.Tag |
| unWithNulls | Opaleye.Internal.MaybeFields |
| unZip | Opaleye.Internal.Table |
| Update | |
| 1 (Data Constructor) | Opaleye.Internal.Sql |
| 2 (Type/Class) | Opaleye.Manipulation, Opaleye |
| 3 (Data Constructor) | Opaleye.Manipulation, Opaleye |
| updateEasy | Opaleye.Manipulation, Opaleye |
| Updater | |
| 1 (Type/Class) | Opaleye.Internal.Manipulation, Opaleye.Adaptors, Opaleye |
| 2 (Data Constructor) | Opaleye.Internal.Manipulation |
| upper | Opaleye.Operators, Opaleye |
| upperBound | Opaleye.Operators, Opaleye |
| uReturning | Opaleye.Manipulation, Opaleye |
| uTable | Opaleye.Manipulation, Opaleye |
| uUpdateWith | Opaleye.Manipulation, Opaleye |
| uWhere | Opaleye.Manipulation, Opaleye |