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sysdatatypemappings (Transact-SQL)

The sysdatatypemappings view is used to show the mapping between SQL Server data types and data types of a non-SQL Server database management system (DBMS). This view is stored in the msdb database.

Column name

Data type

Description

mapping_id

int

The ID of the data type mapping.

source_dbms

sysname

Indicates the name of the DBMS from which the data types are mapped, and can be one of the following values:

Value

Description

MSSQLSERVER

The source is a SQL Server database.

ORACLE

The source is an Oracle database.

source_version

sysname

Indicates the product version of the source DBMS.

source_type

sysname

Indicates the data type listed in the source DBMS.

source_length_min

bigint

The minimum length of the data type at the source DBMS, where a value of NULL indicates that length is not used.

source_length_max

bigint

The maximum length of the data type at the source DBMS, where a value of NULL indicates that length is not used.

source_precision_min

bigint

The minimum precision of the data type at the source DBMS, where a value of NULL indicates that precision is not used.

source_precision_max

bigint

The maximum precision of the data type at the source DBMS, where a value of NULL indicates that precision is not used.

source_scale_min

int

The minimum scale of the data type at the source DBMS, where a value of NULL indicates that scale is not used.

source_scale_max

int

The maximum scale of the data type at the source DBMS, where a value of NULL indicates that scale is not used.

source_nullable

bit

Indicated if the destination data type supports null values.

source_createparams

int

Internal use only.

destination_dbms

sysname

Indicates the name of the destination DBMS, and can be one of the following values:

Value

Description

MSSQLSERVER

The destination is a SQL Server database.

ORACLE

The destination is an Oracle database.

DB2

The destination is an IBM DB2 database.

SYBASE

The destination is a Sybase database.

destination_version

sysname

The product version of the destination DBMS.

destination_type

sysname

The data type in the destination DBMS.

destination_length

bigint

The length of the data type in the destination DBMS.

destination_precision

bigint

The precision of the data type in the destination DBMS.

destination_scale

int

The scale of the data type in the destination DBMS.

destination_nullable

bit

Indicates if the data type in the destination DBMS supports a null value.

destination_createparams

int

Internal use only.

dataloss

bit

Indicates if data loss occurs when mapping between the data type at the source and destination DBMS.

is_default

bit

Indicates if the data type mapping is used by default.

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