| SQL adaptation guide For SQL SERVER 2005, 2008, 2012 / Data dictionary | |
When creating a table, Informix® automatically adds a "ROWID" integer column (applies to non-fragmented tables only). The ROWID column is auto-filled with a unique number and can be used like a primary key to access a given row.
Microsoft™ SQL SERVER tables have no ROWIDs.
If the BDL application uses ROWIDs, the program logic should be reviewed in order to use the real primary keys (usually, serials which can be supported).
However, if your existing Informix application depends on using ROWID values, you can use the IDENTITY property of the DECIMAL, INT, NUMERIC, SMALLINT, BIGINT, or TINYINT data types, to simulate this functionality.
All references to SQLCA.SQLERRD[6] must be removed because this variable will not hold the ROWID of the last INSERTed or UPDATEd row when using the Microsoft SQL SERVER interface.