| O | Opaleye.Internal.TypeFamilies, Opaleye.TypeFamilies | 
| offset |  | 
| 1 (Function) | Opaleye.Internal.Sql | 
| 2 (Function) | Opaleye.Order, Opaleye | 
| offset' | Opaleye.Internal.Order | 
| OffsetOp | Opaleye.Internal.PrimQuery | 
| OnConflict | Opaleye.Internal.HaskellDB.Sql, Opaleye.Manipulation, Opaleye | 
| oneTable | Opaleye.Internal.Sql | 
| OOpt | Opaleye.Internal.TypeFamilies | 
| OpAbs | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpAnd | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpAsc | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpAtTimeZone | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpDesc | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpILike | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpIn | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpIsNotNull | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpIsNull | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpLength | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpLike | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpLower | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpMod | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpNegate | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpNot | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpOr | Opaleye.Internal.HaskellDB.PrimQuery | 
| OpOther | Opaleye.Internal.HaskellDB.PrimQuery | 
| Opt | Opaleye.Internal.TypeFamilies, Opaleye.TypeFamilies | 
| optimize | Opaleye.Internal.Optimize | 
| optional |  | 
| 1 (Function) | Opaleye.Internal.Table, Opaleye.Table, Opaleye | 
| 2 (Function) | Opaleye.Internal.MaybeFields | 
| 3 (Function) | Opaleye.Join, Opaleye.MaybeFields | 
| optionalExplicit | Opaleye.Join, Opaleye.MaybeFields, Opaleye | 
| Optionality | Opaleye.Internal.TypeFamilies | 
| optionalRestrict |  | 
| 1 (Function) | Opaleye.Internal.Join | 
| 2 (Function) | Opaleye.Join, Opaleye | 
| optionalRestrictExplicit |  | 
| 1 (Function) | Opaleye.Internal.Join | 
| 2 (Function) | Opaleye.Join, Opaleye | 
| optionalRestrictOptional | Opaleye.Internal.MaybeFields | 
| optionalTableField | Opaleye.Internal.Table, Opaleye.Table, Opaleye | 
| optionalW | Opaleye.Internal.Table | 
| OpUpper | Opaleye.Internal.HaskellDB.PrimQuery | 
| Order |  | 
| 1 (Type/Class) | Opaleye.Internal.Order, Opaleye.Order, Opaleye | 
| 2 (Data Constructor) | Opaleye.Internal.Order | 
| order | Opaleye.Internal.Order | 
| orderAggregate | Opaleye.Internal.Aggregate | 
| orderBy |  | 
| 1 (Function) | Opaleye.Internal.Sql | 
| 2 (Function) | Opaleye.Order, Opaleye | 
| orderByU | Opaleye.Internal.Order | 
| OrderDirection | Opaleye.Internal.HaskellDB.PrimQuery | 
| orderDirection | Opaleye.Internal.HaskellDB.PrimQuery | 
| OrderExpr |  | 
| 1 (Type/Class) | Opaleye.Internal.HaskellDB.PrimQuery | 
| 2 (Data Constructor) | Opaleye.Internal.HaskellDB.PrimQuery | 
| orderExprs | Opaleye.Internal.Order | 
| OrderNulls | Opaleye.Internal.HaskellDB.PrimQuery | 
| orderNulls | Opaleye.Internal.HaskellDB.PrimQuery | 
| OrderOp |  | 
| 1 (Type/Class) | Opaleye.Internal.HaskellDB.PrimQuery | 
| 2 (Data Constructor) | Opaleye.Internal.HaskellDB.PrimQuery | 
| OReq | Opaleye.Internal.TypeFamilies | 
| ors | Opaleye.Operators, Opaleye | 
| OT | Opaleye.Internal.TypeFamilies | 
| OtherLit | Opaleye.Internal.HaskellDB.PrimQuery | 
| overlap | Opaleye.Operators, Opaleye | 
| overPM | Opaleye.Internal.PackMap |