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sp_getdefaultdatatypemapping (Transact-SQL)

Returns information on the default mapping for the specified data type between Microsoft SQL Server and a non-SQL Server database management system (DBMS). This stored procedure is executed at the Distributor on any database.

Topic link icon Transact-SQL Syntax Conventions

sp_getdefaultdatatypemapping [ @source_dbms = ] 'source_dbms' 
    [ , [ @source_version = ] 'source_version' ]
        , [ @source_type = ] 'source_type'  
    [ , [ @source_length = ] source_length ]
    [ , [ @source_precision = ] source_precision ]
    [ , [ @source_scale = ] source_scale ]
    [ , [ @source_nullable = ] source_nullable ]
        , [ @destination_dbms = ] 'destination_dbms' 
    [ , [ @destination_version = ] 'destination_version' ]
    [ , [ @destination_type = ] 'destination_type' OUTPUT ]
    [ , [ @destination_length = ] destination_length OUTPUT ]
    [ , [ @destination_precision = ] destination_precision OUTPUT ]
    [ , [ @destination_scale = ] destination_scale OUTPUT ]
    [ , [ @destination_nullable = ] source_nullable OUTPUT ]
    [ , [ @dataloss = ] dataloss OUTPUT ]

[ @source_dbms= ] 'source_dbms'

Is the name of the DBMS from which the data types are mapped. source_dbms is sysname, 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.

You must specify this parameter.

[ @source_version= ] 'source_version'

Is the version number of the source DBMS. source_version is varchar(10), with a default value of NULL.

[ @source_type= ] 'source_type'

Is the data type in the source DBMS. source_type is sysname, with no default.

[ @source_length= ] source_length

Is the length of the data type in the source DBMS. source_length is bigint, with a default value of NULL.

[ @source_precision= ] source_precision

Is the precision of the data type in the source DBMS. source_precision is bigint, with a default value of NULL.

[ @source_scale= ] source_scale

Is the scale of the data type in the source DBMS. source_scale is int, with a default value of NULL.

[ @source_nullable= ] source_nullable

Is if the data type in the source DBMS supports a value of NULL. source_nullable is bit, with a default value of 1, which means that NULL values are supported.

[ @destination_dbms = ] 'destination_dbms'

Is the name of the destination DBMS. destination_dbms is sysname, 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.

You must specify this parameter.

[ @destination_version= ] 'destination_version'

Is the product version of the destination DBMS. destination_version is varchar(10), with a default value of NULL.

[ @destination_type= ] 'destination_type' OUTPUT

Is the data type listed in the destination DBMS. destination_type is sysname, with a default value of NULL.

[ @destination_length= ] destination_length OUTPUT

Is the length of the data type in the destination DBMS. destination_length is bigint, with a default value of NULL.

[ @destination_precision= ] destination_precision OUTPUT

Is the precision of the data type in the destination DBMS. destination_precision is bigint, with a default value of NULL.

[ @destination_scale= ] destination_scaleOUTPUT

Is the scale of the data type in the destination DBMS. destination_scale is int, with a default value of NULL.

[ @destination_nullable= ] destination_nullableOUTPUT

Is if the data type in the destination DBMS supports a value of NULL. destination_nullable is bit, with a default value of NULL. 1 means that NULL values are supported.

[ @dataloss= ] datalossOUTPUT

Is if the mapping has the potential for data loss. dataloss is bit, with a default value of NULL. 1 means that there is a potential for data loss.

0 (success) or 1 (failure)

sp_getdefaultdatatypemapping is used in all types of replication between SQL Server and a non-SQL Server DBMS.

sp_getdefaultdatatypemapping returns the default destination data type that is the closest match to the specified source data type.

Only members of the sysadmin fixed server role can execute sp_getdefaultdatatypemapping.

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