Data type mappings for schema synchronization - Data Transmission Service

Heterogeneous databases have different data types. When Data Transmission Service (DTS) synchronizes data between heterogeneous databases, DTS converts the data types of the source database to those of the destination database. This topic lists the data type mappings for you to view and evaluate the impact of data synchronization on your business.

Overview

You can view the data type mappings between heterogeneous databases based on the following synchronization scenarios:

Synchronize data from a MySQL database
Synchronize data from an Oracle database
Synchronize data from a PostgreSQL database
Synchronize data from an SQL Server database
Synchronize data from a Db2 for LUW database
Synchronize data from a Db2 for i database

Synchronize data from a MySQL database

The following table lists the data type mappings between MySQL and AnalyticDB databases. The source database can be a self-managed MySQL database, an ApsaraDB RDS for MySQL instance, or a PolarDB for MySQL cluster. The destination database can be an AnalyticDB for MySQL V2.0 cluster or an AnalyticDB for PostgreSQL instance.

Note

If the value range of the data to be synchronized from the source instance exceeds the range supported by DTS, the accuracy of the data written to the destination instance decreases.

Destination instance: an AnalyticDB for MySQL cluster or an AnalyticDB for PostgreSQL instance

Category	Data type of the source instance	Value range	Data type of AnalyticDB for MySQL	Data type of AnalyticDB for PostgreSQL
Integer	BIT[(M)]	1 ~ 64	VARCHAR	BIT[(M)]
	TINYINT[(M)]	-128 ~ 127	TINYINT	SMALLINT
	TINYINT[(M)] [UNSIGNED]	0 ~ 255	SMALLINT	SMALLINT
	SMALLINT[(M)]	-32768 ~ 32767	SMALLINT	SMALLINT
	SMALLINT[(M)] [UNSIGNED]	0 ~ 65535	INT	INTEGER
	MEDIUMINT[(M)]	-8388608 ~ 8388607	INT	INTEGER
	MEDIUMINT[(M)] [UNSIGNED]	0 ~ 16777215	INT	INTEGER
	INT[(M)]	-2147483648 ~ 2147483647	INT	INTEGER
	INT[(M)] [UNSIGNED]	0 ~ 4294967295	BIGINT	BIGINT
	BIGINT[(M)]	-9223372036854775808 ~ 9223372036854775807	BIGINT	BIGINT
	BIGINT[(M)] [UNSIGNED]	0 ~ 18446744073709551615	DECIMAL(20,0)	NUMERIC(20)
Decimal	DECIMAL[(M[,D])]	M: 0 to 65 D: 0 to 30	DECIMAL[(M[,D])]	DECIMAL[(M[,D])]
	FLOAT(p)	1.175494351E-38 ~ 3.402823466E+38	FLOAT	REAL
	DOUBLE[(M,D)]	2.2250738585072014E-308 ~ 1.7976931348623157E+308	DOUBLE	DOUBLE PRECISION
Date and time	DATE	1000-01-01~9999-12-31 Note The format is YYYY-MM-DD.	DATE	DATE
	DATETIME[(fsp)]	1000-01-01 00:00:00.000000 ~ 9999-12-31 23:59:59.999999 Note The format is YYYY-MM-DD hh:mm:ss[.fraction], in UTC.	DATETIME	TIMESTAMP
	TIMESTAMP[(fsp)]	1970-01-01 00:00:01.000000 ~ 2038-01-19 03:14:07.999999 Note The format is YYYY-MM-DD hh:mm:ss[.fraction], in UTC.	TIMESTAMP	TIMESTAMP WITH TIME ZONE
	TIME[(fsp)]	-838:59:59.000000 ~ 838:59:59.000000 Note The format is hh:mm:ss[.fraction], in UTC.	TIME	TIMESTAMP WITH TIME ZONE
	YEAR[(4)]	1901 to 2155, or 0000	INT	INTEGER
String	CHAR[(M)]	0 to 255 characters	VARCHAR	CHAR
	VARCHAR(M)	0 to 65,535 characters	VARCHAR	VARCHAR
	BINARY[(M)]	0 to 255 bytes	VARBINARY	BYTEA
	VARBINARY(M)	0 to 65,535 bytes	VARBINARY	BYTEA
	TINYBLOB	255 (2^8 - 1) bytes	VARBINARY	BYTEA
	TINYTEXT	255 (2^8 - 1) characters	VARCHAR	TEXT
	BLOB	65,535 (2^16 - 1) bytes	VARBINARY	BYTEA
	TEXT	65,535 (2^16 - 1) characters	VARCHAR	TEXT
	MEDIUMBLOB	16,777,215 (2^24 - 1) bytes	VARBINARY	BYTEA
	MEDIUMTEXT	16,777,215 (2^24 - 1) characters	VARCHAR	TEXT
	LONGBLOB	4,294,967,295 or 4 GB (2^32 - 1) bytes	VARBINARY	BYTEA
	LONGTEXT	4,294,967,295 or 4 GB (2^32 - 1) characters	VARCHAR	TEXT
	ENUM('value1','value2',...)	An ENUM column can have a maximum of 65,535 distinct elements.	VARCHAR	VARCHAR(128)
	SET('value1','value2',...)	A SET column can have a maximum of 64 distinct elements.	VARCHAR	VARCHAR(128)
Spatial	GEOMETRY	Geometry values of any type	VARBINARY	POLYGON
	POINT	N/A	VARBINARY	POINT
	LINESTRING	N/A	VARBINARY	PATH
	POLYGON	N/A	VARBINARY	POLYGON
	MULTIPOINT	N/A	VARBINARY	POLYGON
	MULTILINESTRING	N/A	VARBINARY	PATH
	MULTIPOLYGON	N/A	VARBINARY	POLYGON
	GEOMETRYCOLLECTION	A collection of geometry values of any type	VARBINARY	POLYGON
JSON	JSON	N/A	JSON	JSON

Destination instance: a DataHub project, an ApsaraMQ for Kafka instance, or a self-managed Kafka cluster

Category	Data type of the source instance	Value range	Data type of DataHub	Data type of an ApsaraMQ for Kafka instance or a self-managed Kafka cluster
Integer	BIT[(M)]	1 ~ 64	BOOLEAN \| STRING	Consistent with the data types of MySQL or PolarDB for MySQL
	TINYINT[(M)]	-128 ~ 127	BIGINT
	TINYINT[(M)] [UNSIGNED]	0 ~ 255	BIGINT
	SMALLINT[(M)]	-32768 ~ 32767	BIGINT
	SMALLINT[(M)] [UNSIGNED]	0 ~ 65535	BIGINT
	MEDIUMINT[(M)]	-8388608 ~ 8388607	BIGINT
	MEDIUMINT[(M)] [UNSIGNED]	0 ~ 16777215	BIGINT
	INT[(M)]	-2147483648 ~ 2147483647	BIGINT
	INT[(M)] [UNSIGNED]	0 ~ 4294967295	BIGINT
	BIGINT[(M)]	-9223372036854775808 ~ 9223372036854775807	BIGINT
	BIGINT[(M)] [UNSIGNED]	0 ~ 18446744073709551615	BIGINT
Decimal	DECIMAL[(M[,D])]	M: 0 to 65 D: 0 to 30	DECIMAL
	FLOAT(p)	1.175494351E-38 ~ 3.402823466E+38	DOUBLE
	DOUBLE[(M,D)]	2.2250738585072014E-308 ~ 1.7976931348623157E+308	DOUBLE
Date and time	DATE	1000-01-01~9999-12-31 Note The format is YYYY-MM-DD.	TIMESTAMP
	DATETIME[(fsp)]	1000-01-01 00:00:00.000000 ~ 9999-12-31 23:59:59.999999 Note The format is YYYY-MM-DD hh:mm:ss[.fraction], in UTC.	TIMESTAMP
	TIMESTAMP[(fsp)]	1970-01-01 00:00:01.000000 ~ 2038-01-19 03:14:07.999999 Note The format is YYYY-MM-DD hh:mm:ss[.fraction], in UTC.	TIMESTAMP
	TIME[(fsp)]	-838:59:59.000000 ~ 838:59:59.000000 Note The format is hh:mm:ss[.fraction], in UTC.	STRING
	YEAR[(4)]	1901 to 2155, or 0000	STRING
String	CHAR[(M)]	0 to 255 characters	STRING
	VARCHAR(M)	0 to 65,535 characters	STRING
	BINARY[(M)]	0 to 255 bytes	STRING
	VARBINARY(M)	0 to 65,535 bytes	STRING
	TINYBLOB	255 (2^8 - 1) bytes	STRING
	TINYTEXT	255 (2^8 - 1) characters	STRING
	BLOB	65,535 (2^16 - 1) bytes	STRING
	TEXT	65,535 (2^16 - 1) characters	STRING
	MEDIUMBLOB	16,777,215 (2^24 - 1) bytes	STRING
	MEDIUMTEXT	16,777,215 (2^24 - 1) characters	STRING
	LONGBLOB	4,294,967,295 or 4 GB (2^32 - 1) bytes	STRING
	LONGTEXT	4,294,967,295 or 4 GB (2^32 - 1) characters	STRING
	ENUM('value1','value2',...)	An ENUM column can have a maximum of 65,535 distinct elements.	STRING
	SET('value1','value2',...)	A SET column can have a maximum of 64 distinct elements.	STRING
Spatial	GEOMETRY	Geometry values of any type	STRING
	POINT	N/A	STRING
	LINESTRING	N/A	STRING
	POLYGON	N/A	STRING
	MULTIPOINT	N/A	STRING
	MULTILINESTRING	N/A	STRING
	MULTIPOLYGON	N/A	STRING
	GEOMETRYCOLLECTION	A collection of geometry values of any type	STRING
JSON	JSON	N/A	STRING

Destination instance: a MaxCompute project, an Elasticsearch cluster, or a ClickHouse cluster

Category	Data type of the source instance	Value range	MaxCompute	Elasticsearch	ClickHouse
Integer	BIT[(M)]	1 ~ 64	BOOLEAN \| STRING	BOOLEAN \| LONG Note If the data is only one byte long, we recommend that you use the BOOLEAN data type in Elasticsearch.	UInt8
	TINYINT[(M)]	-128 ~ 127	BIGINT	SHORT	Int8
	TINYINT[(M)] [UNSIGNED]	0 ~ 255	BIGINT	INTEGER	UInt8
	SMALLINT[(M)]	-32768 ~ 32767	BIGINT	SHORT	Int16
	SMALLINT[(M)] [UNSIGNED]	0 ~ 65535	BIGINT	INTEGER	UInt16
	MEDIUMINT[(M)]	-8388608 ~ 8388607	BIGINT	INTEGER	Int32
	MEDIUMINT[(M)] [UNSIGNED]	0 ~ 16777215	BIGINT	INTEGER	Int32
	INT[(M)]	-2147483648 ~ 2147483647	BIGINT	INTEGER	Int32
	INT[(M)] [UNSIGNED]	0 ~ 4294967295	BIGINT	LONG	UInt32
	BIGINT[(M)]	-9223372036854775808 ~ 9223372036854775807	BIGINT	LONG	Int64
	BIGINT[(M)] [UNSIGNED]	0 ~ 18446744073709551615	BIGINT	LONG	UInt64
Decimal	DECIMAL[(M[,D])]	M: 0 to 65 D: 0 to 30	DOUBLE	DOUBLE Note If the DECIMAL value contains a decimal point, we recommend that you use the TEXT data type in Elasticsearch to ensure data consistency.	DECIMAL
	FLOAT(p)	1.175494351E-38 ~ 3.402823466E+38	DOUBLE	FLOAT	Float32
	DOUBLE[(M,D)]	2.2250738585072014E-308 ~ 1.7976931348623157E+308	DOUBLE	DOUBLE	Float64
Date and time	DATE	1000-01-01~9999-12-31 Note The format is YYYY-MM-DD.	DATETIME	DATE Note The format is YYYY-MM-DD, in UTC. For more information, see Date format mappings.	DATE32
	DATETIME[(fsp)]	1000-01-01 00:00:00.000000 ~ 9999-12-31 23:59:59.999999 Note The format is YYYY-MM-DD hh:mm:ss[.fraction], in UTC.	DATETIME	DATE Note The DATE data format is yyyy-MM-dd'T'HH:mm:ss, in UTC. If the DATE data is accurate to microseconds, the data format is yyyy-MM-dd'T'HH:mm:ss.S. For more information, see Date format mappings.	DATETIME64
	TIMESTAMP[(fsp)]	1970-01-01 00:00:01.000000 ~ 2038-01-19 03:14:07.999999 Note The format is YYYY-MM-DD hh:mm:ss[.fraction], in UTC.	DATETIME	DATE Note The DATE data format is yyyy-MM-dd'T'HH:mm:ss, in UTC. If the DATE data is accurate to microseconds, the data format is yyyy-MM-dd'T'HH:mm:ss.S. For more information, see Date format mappings.	DATETIME Note The DATETIME data does not contain information about the time zone.
	TIME[(fsp)]	-838:59:59.000000 ~ 838:59:59.000000 Note The format is hh:mm:ss[.fraction], in UTC.	STRING	DATE Note The format is YYYY-MM-DD, in UTC. For more information, see Date format mappings.	STRING
	YEAR[(4)]	1901 to 2155, or 0000	STRING	DATE Note The DATE data format is yyyy. For more information, see Date format mappings.	Int16
String	CHAR[(M)]	0 to 255 characters	STRING	TEXT	STRING
	VARCHAR(M)	0 to 65,535 characters	STRING	TEXT	STRING
	BINARY[(M)]	0 to 255 bytes	STRING	BINARY	STRING
	VARBINARY(M)	0 to 65,535 bytes	STRING	BINARY	STRING
	TINYBLOB	255 (2^8 - 1) bytes	STRING	BINARY	STRING
	TINYTEXT	255 (2^8 - 1) characters	STRING	TEXT	STRING
	BLOB	65,535 (2^16 - 1) bytes	STRING	BINARY	STRING
	TEXT	65,535 (2^16 - 1) characters	STRING	TEXT	STRING
	MEDIUMBLOB	16,777,215 (2^24 - 1) bytes	STRING	BINARY	STRING
	MEDIUMTEXT	16,777,215 (2^24 - 1) characters	STRING	TEXT	STRING
	LONGBLOB	4,294,967,295 or 4 GB (2^32 - 1) bytes	STRING	BINARY	STRING
	LONGTEXT	4,294,967,295 or 4 GB (2^32 - 1) characters	STRING	TEXT	STRING
	ENUM('value1','value2',...)	An ENUM column can have a maximum of 65,535 distinct elements.	STRING	KEYWORD	ENUM
	SET('value1','value2',...)	A SET column can have a maximum of 64 distinct elements.	STRING	KEYWORD	STRING
Spatial	GEOMETRY	Geometry values of any type	STRING	GEO_SHAPE	STRING
	POINT	N/A	STRING	GEO_POINT	STRING
	LINESTRING	N/A	STRING	GEO_SHAPE	STRING
	POLYGON	N/A	STRING	GEO_SHAPE	STRING
	MULTIPOINT	N/A	STRING	GEO_SHAPE Note If the data is only one byte long, we recommend that you use the BOOLEAN data type in Elasticsearch.	STRING
	MULTILINESTRING	N/A	STRING	GEO_SHAPE	STRING
	MULTIPOLYGON	N/A	STRING	GEO_SHAPE	STRING
	GEOMETRYCOLLECTION	A collection of geometry values of any type	STRING	GEO_SHAPE	STRING
JSON	JSON	N/A	STRING	OBJECT Note If the data is only one byte long, we recommend that you use the BOOLEAN data type in Elasticsearch.	STRING

Destination instance: a Tablestore instance

Data type of the source instance	Data type of Tablestore
INTEGER	INTEGER
INT	INTEGER
SMALLINT	INTEGER
TINYINT	INTEGER
MEDIUMINT	INTEGER
BIGINT	INTEGER
DECIMAL	DOUBLE
NUMERIC	DOUBLE
FLOAT	DOUBLE
DOUBLE	DOUBLE
BIT	BOOLEAN
DATE	STRING or INTEGER Note Default value: STRING.
TIMESTAMP
DATETIME
TIME
YEAR
CHAR	STRING
VARCHAR	STRING
BINARY	BINARY
VARBINARY	BINARY
TINYBLOB/BLOB/MEDIUMBLOB/LONGBLOB	BINARY
TINYTEXT/TEXT/MEDIUMTEXT/LONGTEXT	STRING
ENUM	STRING
SET	STRING
GEOMETRY	STRING
POINT	STRING
LINESTRING	STRING
POLYGON	STRING
MULTIPOINT	STRING
MULTILINESTRING	STRING
MULTIPOLYGON	STRING
GEOMETRYCOLLECTION	STRING
JSON	STRING

Destination instance: a Lindorm instance

Data type of the source instance	Data type of Lindorm
BOOLEAN	BOOLEAN
BIT	BOOLEAN
TINYINT	TINYINT
SMALLINT	SMALLINT
INTEGER	INTEGER
BIGINT	BIGINT
FLOAT	FLOAT
DOUBLE	DOUBLE
DECIMAL	DECIMAL
CHAR/VARCHAR/TEXT/TINYTEXT/MEDIUMTEXT/LONGTEXT	CHAR/VARCHAR
BINARY	BINARY
BLOB	VARBINARY
VARBINAY	VARBINARY
TIMESTAMP	TIMESTAMP
YEAR	INTEGER
DATE	VARCHAR
DATETIME	VARCHAR Important We recommend that you map the DATETIME data in the source database to data of the VARCHAR type in the destination database. If you want to map the DATETIME data to data of the TIMESTAMP type, data inconsistency may occur due to the difference in time zones. We recommend that you use the extract, transform, and load (ETL) feature when you configure the data synchronization task. This ensures data consistency.
TIME	VARCHAR
JSON	JSON

Synchronize data from an Oracle database

The following table lists the data type mappings between a self-managed Oracle database and an AnalyticDB for PostgreSQL instance.

Note

If the value range of the data to be synchronized from the source instance exceeds the range supported by DTS, the accuracy of the data written to the destination instance decreases.

Category	Data type of Oracle	Value range	Data type of AnalyticDB for PostgreSQL
Numeric	NUMBER(p,s)	1 to 22 bytes The argument p indicates the precision. Valid values: 1 to 38. The argument s indicates the scale. Valid values: -84 to 127.	DECIMAL \| TINYINT \| SMALLINT \| INTEGER \| BIGINT
	FLOAT(p)	1 to 22 bytes The variable p indicates a pointer. Valid values: 1 to 126 bits.	DOUBLE PRECISION
	BINARY_FLOAT	A 32-bit floating-point number (4 bytes)	DOUBLE PRECISION
	BINARY_DOUBLE	A 64-bit floating-point number (8 bytes)	DOUBLE PRECISION
Date and time	DATE	N/A	TIMESTAMP(0)
	TIMESTAMP [(fractional_seconds_precision)]	N/A	TIMESTAMP
	TIMESTAMP [(fractional_seconds_precision)] WITH TIME ZONE	N/A	TIMESTAMP WITH TIME ZONE
	TIMESTAMP [(fractional_seconds_precision)] WITH LOCAL TIME ZONE	N/A	TIMESTAMP WITH TIME ZONE
	INTERVAL YEAR [(year_precision)] TO MONTH	N/A	VARCHAR(32)
	INTERVAL DAY [(day_precision)] TO SECOND [(fractional_seconds_precision)]	N/A	VARCHAR(32)
String	CHAR [(size [BYTE \| CHAR])]	2,000 bytes	CHAR
	NCHAR[(size)]	2,000 bytes	VARCHAR
	VARCHAR2(size [BYTE \| CHAR])	If MAX_STRING_SIZE is set to EXTENDED, the maximum size is 32,767 bytes. If MAX_STRING_SIZE is set to STANDARD, the maximum size is 4,000 bytes.	VARCHAR
	NVARCHAR2(size)	If MAX_STRING_SIZE is set to EXTENDED, the maximum size is 32,767 bytes. If MAX_STRING_SIZE is set to STANDARD, the maximum size is 4,000 bytes.	VARCHAR
	LONG	The maximum size is 2 GB (2^31 - 1).	TEXT
	RAW(size)	The maximum size is 32,767 bytes or 2,000 bytes.	BYTEA
	LONG RAW	The maximum size is 2 GB.	BYTEA
	CLOB	The maximum size is (4 GB - 1) × DB_BLOCK_SIZE.	TEXT
	NCLOB	The maximum size is (4 GB - 1) × DB_BLOCK_SIZE.	TEXT
	BLOB	The maximum size is (4 GB - 1) × DB_BLOCK_SIZE.	BYTEA
	BFILE	The maximum size is 4 GB.	Not supported
JSON	JSON	The maximum size is 32 MB.	JSON
ROWID	ROWID	64 characters	OID
Spatial	Customization required	Not supported

Note

If an Oracle data type is not supported by AnalyticDB for PostgreSQL, DTS converts the data type to BYTEA. If the conversion fails, DTS sets the field value to NULL.

Synchronize data from a PostgreSQL database

The following table lists the data type mappings between PostgreSQL and AnalyticDB for PostgreSQL. The source PostgreSQL database can be a self-managed PostgreSQL database or an ApsaraDB RDS for PostgreSQL instance.

Note

If the value range of the data to be synchronized from the source instance exceeds the range supported by DTS, the accuracy of the data written to the destination instance decreases.

Category	Data type of PostgreSQL	Value range	Data type of AnalyticDB for PostgreSQL
Integer	SMALLINT	-32768 to +32767	SMALLINT
	INTEGER	-2147483648 to +2147483647	INTEGER
	BIGINT	-9223372036854775808 to +9223372036854775807	BIGINT
Decimal	DECIMAL	Up to 131,072 digits before the decimal point and up to 16,383 digits after the decimal point.	DECIMAL
	NUMERIC	Up to 131,072 digits before the decimal point and up to 16,383 digits after the decimal point.	NUMERIC
	REAL	6 decimal digits of precision	REAL
	DOUBLE PRECISION	15 decimal digits of precision	DOUBLE PRECISION
Monetary	MONEY	-92233720368547758.08 to +92233720368547758.07	MONEY
String	CHARACTER VARYING(n)	N/A	CHARACTER VARYING(n)
	CHARACTER(n)	N/A	CHARACTER(n)
	TEXT	N/A	TEXT
	CHAR	Default value: 1. Unit: bytes.	CHAR
	NAME	Valid values: 1 to 64. Unit: bytes.	NAME
Text search	TSQUERY	A text query	TEXT
Text search	TSVECTOR	A document in a form optimized for text search	TEXT
Binary	BYTEA	1 or 4 bytes plus the actual binary string	BYTEA
Date and time	TIMESTAMP [ (p) ] [ WITHOUT TIME ZONE ]	Date and time without a time zone. Storage size: 8 bytes.	TIMESTAMP [ (p) ] [ WITHOUT TIME ZONE ]
	TIMESTAMP [ (p) ] WITH TIME ZONE	Date and time with a time zone. Storage size: 8 bytes.	TIMESTAMP [ (p) ] WITH TIME ZONE
	DATE	A date. Storage size: 4 bytes.	DATE
	TIME [ (p) ] [ WITHOUT TIME ZONE ]	A time without time zone. Storage size: 8 bytes.	TIME [ (p) ] [ WITHOUT TIME ZONE ]
	TIME [ (p) ] WITH TIME ZONE	A time with a time zone. Storage size: 12 bytes.	TIME [ (p) ] WITH TIME ZONE
	interval [ fields ] [ (p) ]	A time interval. Storage size: 16 bytes.	interval [ fields ] [ (p) ]
Boolean	BOOLEAN	1 byte	BOOLEAN
Enumerated	Customization required	N/A	VARCHAR(128)
Spatial	POINT	A point on a plane. Storage size: 16 bytes.	POINT
	LINE	An infinite line. Storage size: 32 bytes.	LINE
	LSEG	A finite line segment. Storage size: 32 bytes.	LSEG
	BOX	A rectangular box. Storage size: 32 bytes.	BOX
	PATH	A path. Storage size: 16 + 16n bytes.	PATH
	POLYGON	A polygon (similar to a closed path). Storage size: 40 + 16n bytes.	POLYGON
	CIRCLE	A circle. Storage size: 24 bytes.	CIRCLE
Network address	CIDR	IPv4 and IPv6 networks. Storage size: 7 or 19 bytes.	CIDR
	INET	IPv4 and IPv6 hosts and networks. Storage size: 7 or 19 bytes.	INET
	MACADDR	MAC addresses. Storage size: 6 bytes.	MACADDR
	MACADDR8	MAC addresses in EUI-64 format. Storage size: 8 bytes.	MACADDR8
Bit string	Bit (n)	N/A	Bit (n)
Bit string	BIT VARYING (n)	N/A	BIT VARYING (n)
UUID	UUID	N/A	VARCHAR(64)
XML	XML	N/A	XML
JSON	JSON	N/A	JSON
JSON	JSONB	N/A	JSONB

Synchronize data from an SQL Server database

The following table lists the data type mappings between SQL Server and AnalyticDB databases. The source instance can be a self-managed SQL Server database or an ApsaraDB RDS for SQL Server instance. The destination instance can be an AnalyticDB for MySQL cluster, an AnalyticDB for PostgreSQL instance, or an AnalyticDB for MySQL cluster.

Note

If the value range of the data to be synchronized from the source instance exceeds the range supported by DTS, the accuracy of the data written to the destination instance decreases.

Category	Data type of SQL Server	Value range	Data type of AnalyticDB for MySQL	Data type of AnalyticDB for PostgreSQL	Data type of MySQL
Integer	BIT	An INTEGER data type that can take a value of 1, 0, or NULL	BOOLEAN	BIT(1)	BIT
	TINYINT	0 to 255	TINYINT	SMALLINT	TINYINT
	SMALLINT	-32768 (-2^15) to 32767 (2^15 - 1)	SMALLINT	SMALLINT	SMALLINT
	INT	-2147483648 (-2^31) to 2147483647 (2^31 - 1)	INTEGER	INTEGER	INT
	BIGINT	-9223372036854775808 (-2^63) to 9223372036854775807 (2^63 - 1)	BIGINT	BIGINT	BIGINT
Decimal	NUMERIC[ (p[ ,s] )]	-10^38 + 1 to 10^38 - 1 (1 <= p <= 38)	DECIMAL	DECIMAL	DECIMAL[ (p[ ,s] )]
	DECIMAL[ (p[ ,s] )]	-10^38 + 1 to 10^38 - 1 (1 <= p <= 38)	DECIMAL	DECIMAL	DECIMAL[ (p[ ,s] )]
	FLOAT	-1.79E + 308 to -2.23E - 308, 0, and 2.23E - 308 to 1.79E + 308	DOUBLE	DOUBLE PRECISION	DOUBLE
	REAL	-3.40E + 38 to -1.18E - 38, 0, and 1.18E - 38 to 3.40E + 38	FLOAT	REAL	FLOAT
Monetary	MONEY	-922337203685477.5808 to 922337203685477.5807	DECIMAL(19, 4)	DECIMAL(19, 4)	DECIMAL
Monetary	SMALLMONEY	-214748.3648 to 214748.3647	DECIMAL(10, 4)	DECIMAL(10, 4)	DECIMAL
Date and time	DATE	0001-01-01 to 9999-12-31	DATE	DATE	DATE
	DATETIME	Date range: January 1, 1753 to December 31, 9999 Time range: 00:00:00 to 23:59:59.997	DATETIME	TIMESTAMP(3) WITHOUT TIME ZONE	DATETIME
	DATETIME2[ (fractional seconds precision) ]	Date range: January 1, 1 CE to December 31, 9999 CE Time range: 00:00:00 to 23:59:59.9999999	DATETIME	TIMESTAMP(7) WITHOUT TIME ZONE	DATETIME
	DATETIMEOFFSET [ (fractional seconds precision) ]	Date range: January 1, 1 CE to December 31, 9999 CE Time range: 00:00:00 to 23:59:59.9999999 Time zone offset range: -14:00 to +14:00	TIMESTAMP	TIMESTAMP(7) WITH TIME ZONE	DATETIME
	SMALLDATETIME	The time is based on a 24-hour day, with seconds always zero (:00) and without fractional seconds.	DATETIME	TIMESTAMP WITHOUT TIME ZONE	DATETIME
	TIME [ (fractional second scale) ]	00:00:00.0000000 to 23:59:59.9999999	TIME	TIME(7) WITH TIME ZONE	TIME
String	BINARY [ ( n ) ]	Valid values of n: 1 to 8000.	VARBINARY	BYTEA	BINARY
	VARBINARY [ ( n \| max) ]	Valid values of n: 1 to 8000. max indicates that the maximum storage size is 2^31 - 1 bytes.	VARBINARY	BYTEA	VARBINARY
	CHAR [ ( n ) ]	Valid values of n: 1 to 8000. The storage size is n bytes.	VARCHAR	CHARACTER	If the length is greater than 65535, the data type is TEXT. If the length is greater than 255 and smaller than or equal to 65535, the data type is VARCHAR. If the length is smaller than or equal to 255, the data type is CHAR.
	VARCHAR [ ( n \| max ) ]	Valid values of n: 1 to 8000. max indicates that the maximum storage size is 2^31 - 1 bytes (2 GB).	VARCHAR	CHARACTER	If the length is greater than 65535, the data type is TEXT. If the length is smaller than or equal to 65535, the data type is VARCHAR.
	NCHAR [ ( n ) ]	n defines the string size in byte pairs. Valid values of n: 1 to 4000. The storage size is two times n bytes.	VARCHAR	CHARACTER VARYING	VARCHAR(200)
	NVARCHAR [ ( n \| max ) ]	n defines the string size in byte pairs. Valid values of n: 1 to 1 to 4000. max indicates that the maximum storage size is 2^30 - 1 characters (2 GB).	VARCHAR	CHARACTER VARYING	If the length is greater than 65535, the data type is TEXT. If the length is smaller than or equal to 65535, the data type is VARCHAR.
	NTEXT	Variable-length Unicode data with a maximum string length of 1,073,741,823 (2^30 - 1) bytes.	VARCHAR	TEXT	TEXT
	TEXT	The maximum string length is 2,147,483,647 (2^31 - 1) bytes.	VARCHAR	TEXT	TEXT
	IMAGE	Variable-length binary data from 0 to 2,147,483,647 (2^31 - 1) bytes.	VARBINARY	BYTEA	BLOB
Spatial (geography and geometry)	GEOGRAPHY	N/A	VARCHAR	Not supported	BLOB
Spatial (geography and geometry)	GEOMETRY	N/A	VARCHAR	Not supported	BLOB
XML	XML ( [ CONTENT \| DOCUMENT ] xml_schema_collection )	N/A	VARCHAR	XML	TEXT
Other types	UNIQUEIDENTIFIER	N/A	VARCHAR	CHARACTER(36)	VARCHAR(200)
	SQL_VARIANT	N/A	Not supported	Not supported	VARCHAR(200)
	HIERARCHYID	N/A	Not supported	Not supported	VARCHAR(200)
	SYSNAME	N/A	VARCHAR	CHARACTER VARYING(128)	VARCHAR(200)

Synchronize data from a Db2 for LUW database

The following table lists the data type mappings between a Db2 for LUW database and a MySQL database.

Note

If the value range of the data to be synchronized from the source instance exceeds the range supported by DTS, the accuracy of the data written to the destination instance decreases.

Category	Data type of Db2 for LUW	Value range	Data type of MySQL
Integer	SMALLINT	-32,768~+32,767	SMALLINT
	INTEGER	-2,147,483,648~+2,147,483,647	INT
	BIGINT	-9,223,372,036,854,775,808~ +9,223,372,036,854,775,807	BIGINT
Decimal	DECIMAL(precision-integer, scale-integer)	p<=38	DECIMAL
	FLOAT(integer)	Valid values: 1 to 53. If the integer is in the range of 1 to 24, the format is a single precision floating-point. If the integer is in the range of 25 to 53, the format is double precision floating-point.	FLOAT
	DECFLOAT(precision-integer)	N/A	DECIMAL(65,10)
Date and time	DATE	0001-01-01~9999-12-31	DATE
	TIME	00:00:00~24:00:00	TIME
	TIMESTAMP(integer)	0001-01-01-00.00.00.000000000000~9999-12-31-24.00.00.000000000000;0<=p<= 12	DATETIME
String	CHARACTER(integer)	254	CHAR \| VARCHAR
	VARCHAR(integer)	32,672	VARCHAR
	CHARACTER(integer) FOR BIT DATA	254	BLOB
	CLOB	2,147,483,647	LONGTEXT
	GRAPHIC (integer)	127	CHAR(length*4)
	VARGRAPHIC (integer)	16,336	CHAR(length*4)
	DBCLOB (integer)	1,073,741,823	VARCHAR \| LONGTEXT
	BLOB	2,147,483,647	LONGBLOB
Other types	XML	2,147,483,647	VARCHAR \| LONGTEXT

Synchronize data from a Db2 for i database

The following table lists the data type mappings between a Db2 for i database and a MySQL database.

Note

If the value range of the data to be synchronized from the source instance exceeds the range supported by DTS, the accuracy of the data written to the destination instance decreases.

Category	Data type of Db2 for i	Value range	Data type of MySQL
Integer	SMALLINT	-32,768~+32,767	SMALLINT
	INTEGER	-2,147,483,648~+2,147,483,647	INT
	BIGINT	-9,223,372,036,854,775,808~ +9,223,372,036,854,775,807	BIGINT
Decimal	DECIMAL(precision-integer, scale-integer)	p<=63	DECIMAL
	NUMERIC	N/A	DECIMAL
	FLOAT(integer)	N/A	FLOAT
	DECFLOAT(precision-integer)	N/A	DECIMAL(65,10)
Date and time	DATE	0001-01-0~9999-12-31	DATE
	TIME	00:00:00~24:00:00	TIME
	TIMESTAMP(integer)	0001-01-01-00.00.00.000000000000 to 9999-12-31-24.00.00.000000000000 (0 <= p <= 12)	DATETIME
String	CHAR(integer)	32,765	CHAR \| VARCHAR
	VARCHAR(integer)	32,739	VARCHAR
	CHAR(integer) FOR BIT DATA	N/A	BLOB
	CLOB	2,147,483,647	LONGTEXT
	GRAPHIC (integer)	16,382	CHAR
	VARGRAPHIC (integer)	16,369	VARCHAR
	DBCLOB (integer)	1,073,741,823	LONGTEXT
	BINARY	32,765	BINARY
	VARBIN	32,739	VARBINARY
	BLOB	2,147,483,647	LONGBLOB
Other types	DATALINK	N/A	VARCHAR \| LONGTEXT
	ROWID	40	VARCHAR \| LONGTEXT
	XML	2,147,483,647	VARCHAR \| LONGTEXT