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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
Options that affect preprocessing
Preprocess without compiling or linking

Preprocess without compiling or linking

By default, the esql command causes the program to be preprocessed, compiled, and linked. The output of the esql command is an executable file. You can specify the -e option to suppress the compilation and linking of your program. With this option, esql only causes preprocessing of the code. The output of this command is a C source file (.c extension).

For example, to preprocess the program that is in the file demo1.ec, you use the following command:

esql -e demo1.ec

The preceding command would generate a C source file that is called demo1.c. The following esql command preprocesses demo1.ec, checks for HCL OneDB™ extensions to ANSI-standard syntax, and does not use line numbers:

esql -e -ansi -G demo1.ec