SELECT TO_CHAR(NOW(),'Mon DD YYYY HH:MI:SS:MSAM') The following example converts a date with format input ('mon dd yyyy hh:mi:ss:mmmAM (or PM)'). The following example converts a numeric value to float. WITH FUNCTION function_name (argument_type ) Syntax CREATE CAST (source_type AS target_type) This option is useful and can make your PL/pgSQL code look cleaner and simpler, see the following examples. For more information, see Data Types.Īnother way to convert between data types in PostgreSQL will be to use the :: characters. Not all SQL Server data types are supported on Aurora PostgreSQL, besides changing the CAST or CONVERT commands, you might need to also change the source of the target data type. If CONVERT is currently in use in SQL Server code, rewrite it to use CAST instead. ![]() For example, checking if a string is a valid credit card number by creating the CAST with the WITHOUT FUNCTION clause.ĬREATE CONVERSION is used to convert between encoding such as UTF8 and LATIN. The behavior is similar to SQL Server’s casting, but in PostgreSQL, you can also create your own casts to change the default behavior. PostgreSQL CONVERSION is used to convert between character set encoding.ĬREATE A CAST defines a new cast on how to convert between two data types. It also provides a CONVERSION function, but it isn’t equivalent to SQL Server CONVERT. PostgreSQL UsageĪmazon Aurora PostgreSQL-Compatible Edition (Aurora PostgreSQL) provides the same CAST function as SQL Server for conversion between data types. SELECT CONVERT(nvarchar(30), GETDATE(), 109) įor more information, see CAST and CONVERT (Transact-SQL) in the SQL Server documentation. The following example converts a date with option style input (109 - mon dd yyyy hh:mi:ss:mmmAM (or PM)). SELECT CONVERT(VARCHAR, '23.7') AS int, CONVERT(int, 23.7) AS decimal įor these two preceding examples, the result looks as shown following. ![]() The following example converts string to int and int to decimal. ![]() SELECT CAST('23.7' AS varchar) AS int, CAST(23.7 AS int) AS decimal The following example casts a string to int and int to decimal. Syntax - CAST Syntax:ĬAST ( expression AS data_type )ĬONVERT ( data_type, expression ) Examples Conversion Matrixįor a list of available conversion data types, see Implicit conversions in the SQL Server documentation. CAST is part of the ANSI-SQL specification, but CONVERT isn’t.ĬONVERT accepts an optional style parameter used for formatting.įor more information, see Date and Time styles in the SQL Server documentation.
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