| Name | Sqel.Type, Sqel |
| named | Sqel.Names, Sqel.Ext, Sqel |
| nameSelector | Sqel.Data.Selector |
| NatSymbol | Sqel.Names.Data |
| Nest | |
| 1 (Data Constructor) | Sqel.Data.Dd, Sqel.Ext |
| 2 (Data Constructor) | Sqel.Data.Term |
| NewK | |
| 1 (Type/Class) | Sqel.Migration.Column |
| 2 (Data Constructor) | Sqel.Migration.Column |
| 3 (Type/Class) | Sqel.Migration.Type |
| 4 (Data Constructor) | Sqel.Migration.Type |
| NewKs | |
| 1 (Type/Class) | Sqel.Migration.Column |
| 2 (Type/Class) | Sqel.Migration.Type |
| NewMigrationActions | |
| 1 (Type/Class) | Sqel.Migration.Column |
| 2 (Type/Class) | Sqel.Migration.Type |
| Newtype | |
| 1 (Type/Class) | Sqel.Data.Mods, Sqel.Ext, Sqel |
| 2 (Data Constructor) | Sqel.Data.Mods, Sqel.Ext |
| NewtypeError | Sqel.Prim |
| NewtypeWrapped | Sqel.Type |
| NewtypeWrapped' | Sqel.Type |
| nocond | Sqel.Query.Combinators, Sqel |
| NoGenericError | Sqel.SOP.Newtype |
| noMigrations | Sqel.Data.Migration, Sqel.Ext, Sqel |
| NoMods | |
| 1 (Type/Class) | Sqel.Data.Mods, Sqel.Ext, Sqel |
| 2 (Data Constructor) | Sqel.Data.Mods, Sqel.Ext |
| NoPrefix | |
| 1 (Data Constructor) | Sqel.Data.Sel, Sqel.Ext |
| 2 (Data Constructor) | Sqel.Query.Fragments |
| NoPrimType | Sqel.Names.Error |
| NotNewtypeError | Sqel.SOP.Newtype |
| NoViewMatch | Sqel.Class.MatchView |
| Ns | Sqel.Names.Data |
| Nullable | |
| 1 (Type/Class) | Sqel.Data.Mods, Sqel.Ext, Sqel |
| 2 (Data Constructor) | Sqel.Data.Mods, Sqel.Ext |
| nullable | Sqel.Column, Sqel |
| nullableAs | Sqel.Column, Sqel |