Global ESQL/C variables in a Windows™ environment

In earlier versions of the Informix® ESQL/C product, Informix® ESQL/C provided several global variables to support different features. The following table describes these global variables.
Table 1. Global ESQL/C variables
Global variable Description
SQLSTATE An ANSI-compliant status code as a five-character string (plus null terminator)

For more information about SQLSTATE, see Exception handling.
SQLCODE sqlca.sqlcode A status code specific to Informix® as an integer value

For more information about SQLCODE, see Exception handling.
sqlca structure Diagnostic information specific to Informix®

For more information about this structure, see Exception handling.
FetBufSize and BigFetBufSize The size of the fetch buffer

BigFetBufSize is same as FetBufSize except for a higher upper limit value of the cursor buffer

For more information about FetBufSize and BigFetBufSize, see Using dynamic SQL.
InetLogin structure Environment information for the client ESQL/C application

For more information, see The InetLogin structure.

In environments, Informix® ESQL/C implements the global variables in Global ESQL/C variables as functions, which the sqlhdr.h file defines. These functions return values that have the same data types as their global-variable counterparts. Therefore, this change in implementation does not require modification of existing Informix® ESQL/C code. You can still use these functions in the same context as their global-variable counterparts.