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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?
HCL OneDB™ ESQL/C data typesThese topics contain information about the correspondence between SQL and C data types and how to handle data types in the program.
Data conversion
Fetch and insert with host variables
Convert between VARCHAR and character data types can automatically convert VARCHAR values between database columns and host variables of character type char, string, or fixchar.

Convert between VARCHAR and character data types

can automatically convert VARCHAR values between database columns and host variables of character type char, string, or fixchar.