Home
Client APIs and toolsYou can use the HCL OneDB™ implementation of client APIs to develop applications for HCL OneDB™ database servers.
ESQL/C GuideThe HCL OneDB™ ESQL/C Programmer's Manual explains how to use , the HCL OneDB™ implementation of Embedded Structured Query Language (SQL) for C (ESQL/C), to create client applications with database-management capabilities.
What is HCL OneDB™ ESQL/C?
Compile programs
The esql command
Run the C preprocessor before the ESQL/C preprocessor
The CPFIRST environment variable (UNIX™)The CPFIRST environment variable specifies whether the C preprocessor is to run before the preprocessor on all source files.

The CPFIRST environment variable (UNIX)

The CPFIRST environment variable specifies whether the C preprocessor is to run before the preprocessor on all source files.

Set the environment variable to TRUE (uppercase only) to run the C preprocessor on all source files, irrespective of whether the -cp option is passed to the esql command, and irrespective of whether the source file has the .ec or the .ecp extension.