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1. data PgDateRange

   beam-postgres	Database.Beam.Postgres

   No documentation available.

2. class PgDebugStmt statement

   beam-postgres	Database.Beam.Postgres

   Type class for Sql* types that can be turned into Postgres syntax, for use in the following debugging functions These include

   • SqlSelect
   • SqlInsert
   • SqlUpdate
   • SqlDelete
   • PgInsertReturning
   • PgUpdateReturning
   • PgDeleteReturning

3. data PgDeleteSyntax

   beam-postgres	Database.Beam.Postgres

   IsSql92DeleteSyntax for Postgres

4. PgEmptyRange :: PgRange n a

   beam-postgres	Database.Beam.Postgres

   No documentation available.

5. data PgExtensionEntity extension

   beam-postgres	Database.Beam.Postgres

   Represents an extension in a database. For example, to include the Database.Beam.Postgres.PgCrypto extension in a database,

   import Database.Beam.Postgres.PgCrypto
   
   data MyDatabase entity
   = MyDatabase
   { _table1 :: entity (TableEntity Table1)
   , _cryptoExtension :: entity (PgExtensionEntity PgCrypto)
   }
   
   migratableDbSettings :: CheckedDatabaseSettings Postgres MyDatabase
   migratableDbSettings = defaultMigratableDbSettings
   
   dbSettings :: DatabaseSettings Postgres MyDatabase
   dbSettings = unCheckDatabase migratableDbSettings
   

   Note that our database now only works in the Postgres backend. Extensions are implemented as records of functions and values that expose extension functionality. For example, the pgcrypto extension (implemented by PgCrypto) provides cryptographic functions. Thus, PgCrypto is a record of functions over QGenExpr which wrap the underlying postgres functionality. You get access to these functions by retrieving them from the entity in the database. For example, to use the pgcrypto extension in the database above:

   let PgCrypto { pgCryptoDigestText = digestText
   , pgCryptoCrypt = crypt } = getPgExtension (_cryptoExtension dbSettings)
   in fmap_ (tbl -> (tbl, crypt (_field1 tbl) (_salt tbl))) (all_ (table1 dbSettings))
   

   To implement your own extension, create a record type, and implement the IsPgExtension type class.

6. data PgInsertSyntax

   beam-postgres	Database.Beam.Postgres

   IsSql92InsertSyntax for Postgres

7. data PgInt4Range

   beam-postgres	Database.Beam.Postgres

   No documentation available.

8. data PgInt8Range

   beam-postgres	Database.Beam.Postgres

   No documentation available.

9. class PgIsArrayContext (ctxt :: k)

   beam-postgres	Database.Beam.Postgres

   If you are extending beam-postgres and provide another expression context that can be represented in an array, provide an empty instance of this class.

10. class PgIsRange (n :: k)

    beam-postgres	Database.Beam.Postgres

    A class representing Postgres Range types and how to refer to them when speaking to the database. For custom Range types, create an uninhabited type, and make it an instance of this class.

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