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SQL Server Integration Services (Troubleshooting)

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You can customize the default data conversions by using the SQL Server Integration Services Import and Export Wizard to edit data type mapping files. The mapping files define data type mappings between the data source and the destination, and are defined in XML format. When you edit the XML files, you ensure compatibility between the source and destination.

The XML files are located in the MappingFiles folders of the Microsoft SQL Server installation.

Data Type Mapping

To correctly map IBM DB2 for IBM i character and decimal data types to SQL Server data types, the data mapping files should be extended to include the DB2 data type long form synonym. For example, when you use the Microsoft OLE DB Provider for DB2 (Data Provider), add the following data type mapping between DB2 INTEGER source and SQL Server. This mapping is compatible with SQLOLEDB and System.Data.SqlClient.SqlConnection. It replaces the short form SourceDataType value INT with the long form INTEGER.

The following mapping for DB2 INT is compatible with a DB2 for z/OS source.

<!-- INT -->
    <dtm:DataTypeMapping>
        <dtm:SourceDataType>
            <dtm:DataTypeName>INT</dtm:DataTypeName>
        </dtm:SourceDataType>
        <dtm:DestinationDataType>
            <dtm:SimpleType>
                <dtm:DataTypeName>INT</dtm:DataTypeName>
            </dtm:SimpleType>
        </dtm:DestinationDataType>
    </dtm:DataTypeMapping>

The following data type mapping for DB2 INTEGER is compatible with a DB2 for IBM i source.

<!-- INTEGER -->
<dtm:DataTypeMapping>
    <dtm:SourceDataType>
        <dtm:DataTypeName>INTEGER</dtm:DataTypeName>
    </dtm:SourceDataType>
    <dtm:DestinationDataType>
        <dtm:SimpleType>
            <dtm:DataTypeName>INT</dtm:DataTypeName>
        </dtm:SimpleType>
    </dtm:DestinationDataType>
</dtm:DataTypeMapping>

Mapping Files

The following table describes the three mapping files that you can edit when you use the Data Provider.

DB2 Data Type Name DB2ToMSSql DB2ToMSSql10 DB2ToSSIS10
TIME DATETIME time DT_DBTIME
TIMESTAMP datetime datetime2 DT_DBTIMESTAMP2
DATE DATETIME DATE DT_DBDATE
CHAR CHAR CHAR DT_STR
CHAR () FOR BIT DATA BINARY BINARY DT_BYTES
CHAR () FOR MIXED DATA NCHAR NCHAR DT_WSTR
CHAR () FOR SBCS DATA CHAR CHAR DT_STR
CHARACTER CHAR CHAR DT_STR
CHARACTER () FOR BIT DATA BINARY BINARY DT_BYTES
CHARACTER () FOR MIXED DATA NCHAR NCHAR DT_WSTR
CHARACTER () FOR SBCS DATA CHAR CHAR DT_STR
NATIONAL CHARACTER NCHAR NCHAR DT_WSTR
VARCHAR VARCHAR VARCHAR DT_STR
VARCHAR () FOR BIT DATA VARBINARY VARBINARY DT_BYTES
VARCHAR () FOR MIXED DATA NVARCHAR NVARCHAR DT_WSTR
VARCHAR () FOR SBCS DATA VARCHAR VARCHAR DT_STR
CHARACTER VARYING VARCHAR VARCHAR DT_STR
CHARACTER VARYING () FOR BIT DATA VARBINARY VARBINARY DT_BYTES
CHARACTER VARYING () FOR MIXED DATA NVARCHAR NVARCHAR DT_WSTR
CHARACTER VARYING () FOR SBCS DATA VARCHAR VARCHAR DT_STR
NATIONAL CHARACTER VARYING NVARCHAR NVARCHAR DT_WSTR
LONG VARCHAR FOR BIT DATA image image DT_IMAGE
LONG VARCHAR text text DT_TEXT
GRAPHIC NCHAR NCHAR DT_WSTR
VARGRAPHIC NVARCHAR NVARCHAR DT_WSTR
GRAPHIC VARYING NVARCHAR NVARCHAR DT_WSTR
SMALLINT SMALLINT SMALLINT DT_I2
INT INT INT DT_I4
INTEGER INT INT DT_I4
BIGINT BIGINT BIGINT DT_I8
DECIMAL NUMERIC NUMERIC DT_NUMERIC
NUMERIC NUMERIC NUMERIC DT_NUMERIC
REAL REAL REAL DT_R4
FLOAT FLOAT FLOAT DT_R8
DOUBLE FLOAT FLOAT DT_R8
DOUBLE PRECISION FLOAT FLOAT DT_R8
BLOB image image DT_BYTES
BNARY LARGE OBJECT image image DT_BYTES
CLOB text text DT_TEXT
CLOB () FOR MIXED DATA ntext ntext DT_NTEXT
CLOB () FOR SBCS DATA text text DT_TEXT
CHAR LARGE OBJECT text text DT_TEXT
CHAR LARGE OBJECT () FOR MIXED DATA ntext ntext DT_NTEXT
CHAR LARGE OBJECT () FOR SBCS DATA text text DT_TEXT
CHARACTER LARGE OBJECT text text DT_TEXT
CHARACTER LARGE OBJECT () FOR MIXED DATA ntext ntext DT_NTEXT
CHARACTER LARGE OBJECT () FOR SBCS DATA text text DT_TEXT
130 ntext ntext DT_NTEXT

For more information about configuring SQL Server 2022 Integration Services, see the Data Flow section.

Customizing Data Flow Components

You can use SQL Server Integration Services Data Flow Components to perform default and customized transformations. The customized transformations are based on developer-provided custom code.

The SQL Server Integration Services mapping files in XML format are for use with the Import and Export Wizard. These files are not for use with the Data Flow. SQL Server Integration Services offers a Pipeline Buffer class to allow enterprise developers to customize data mapping within the Data Flow.

For more information about customizing data flow components using SQL Server 2022 Integration Services, see the Data Flow section.