The equivalent command that was created by AWS SCT: CREATE TABLE scttest( SQL Server CREATE TABLE command: CREATE TABLE scttest( Varchar2 character varying(10) DEFAULT NULL,ĪWS SCT converts all incompatible data types. Varchar character varying(10) DEFAULT NULL, Timestamp_with_time_zone TIMESTAMP(5) with time zone DEFAULT NULL, ![]() Timestamp TIMESTAMP(5) without time zone DEFAULT NULL, CREATE TABLE IF NOT EXISTS datatypes(īinary_double double precision DEFAULT NULL,ĭate TIMESTAMP(0) without time zone DEFAULT NULL,ĭouble_precision double precision DEFAULT NULL, Target PostgreSQL compatible DDL for creating the DATATYPES table migrated from SQL Server with AWS SCT. ![]() "TIMESTAMP_WITH_TIME_ZONE" DATETIMEOFFSET(5), Source SQL Server compatible DDL for creating the DATATYPES table CREATE TABLE "DataTypes"( To demonstrate AWS SCT capability for migrating SQL Server tables to their PostgreSQL equivalents, a table containing columns representing the majority of SQL Server data types was created and converted using AWS SCT. You can use AWS Schema Conversion Tool (AWS SCT) for automatic migration and conversion of SQL Server tables and data types. Migration of SQL Server Data Types to PostgreSQL Data Types VARCHAR(n) stores strings up to n characters, not bytes, in length. If you define a field as VARCHAR (10), PostgreSQL can store 10 characters regardless of how many bytes it takes to store each non-English character. PostgreSQL only supports CHAR for column size semantics. The following tables include the full list of PostgreSQL data types. PostgreSQL provides multiple data types equivalent to certain SQL Server data types. DECLARE AS AS DATETIME2 DECLARE TABLEįor more information, see Data types (Transact-SQL) in the SQL Server documentation. CREATE TABLE MyTableĭefine variable types. ![]() For more information, see the SQL Server Collations and PostgreSQL Encoding. Also, AWS SCT converts TEXT and NTEXT data types to LONGTEXT and IMAGE to LONGBLOB. If your code uses TEXT, NTEXT or IMAGE data types, AWS SCT automatically converts them to the appropriate Aurora PostgreSQLīYTEA data type. They also provide enhanced performance over the legacy types. These new types support a wider range of functions and operations. In SQL Server 2005, Microsoft introduced the new and improved VARCHAR (MAX), NVARCHAR(MAX), and VARBINARY(MAX) data types as the new BLOB and CLOB standard. The TEXT data type was used to store ASCII text CLOBS, the NTEXT data type to store UNICODE CLOBS, and IMAGE was used as a generic data type for storing all BLOB data. These data types are legacy types for storing BLOB and CLOB data. For more information, see Deprecated Database Engine Features in SQL Server 2008 R2 in the SQL Server documentation. The TEXT, NTEXT, and IMAGE data types have been deprecated as of SQL Server 2008R2. ![]() TEXT, NTEXT, and IMAGE Deprecated Data Types For more information, see User-Defined Types. Custom data types are based on the built-in system data types and are used to simplify development. You can create custom user defined data types using T-SQL, and the. TEXT, NTEXT, IMAGE, VARCHAR(MAX), NVARCHAR(MAX), VARBINARY(MAX) BIT, TINYINT, SMALLINT, INT, BIGINT, NUMERIC, DECIMAL, MONEY, SMALLMONEY, FLOAT, REALĭATE, TIME, SMALLDATETIME, DATETIME, DATETIME2, DATETIMEOFFSET
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