SQL data types specific to Informix®

The SQL data types specific to HCL Informix® are available to a column in the Informix® database.

The HCL® Informix® Guide to SQL: Reference describes these data types. If you do not include the -xopen option when you compile your program, the DESCRIBE statement uses these data types to specify the data type of a column or the return value of a user-defined function. Constants for these Informix® SQL data types are defined in the sqltypes.h header file.

The following figure shows some of the SQL data type entries in sqltypes.h.
Figure 1. Some Informix® SQL data type constants
#define SQLCHAR          0
#define SQLSMINT         1
#define SQLINT           2
#define SQLFLOAT         3
#define SQLSMFLOAT       4
#define SQLDECIMAL       5
#define SQLSERIAL        6
#define SQLDATE          7
#define SQLMONEY         8

For a complete list of constants for SQL data types, see Constants for Informix SQL column data types. The integer values in Some Informix SQL data type constants are language-independent constants; they are the same in all HCL Informix® embedded products.