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?
Time data typesThese topics explain how to use date, datetime, and interval data types in the HCL® OneDB® ESQL/C program.
Support of non-ANSI DATETIME formats supports conversions from a data-time string in a non-ANSI format to the DATETIME data type. This conversion makes it easier to upgrade from Asian Language Support (ALS) client/server products to Global Language Support (GLS) client/server products.
The USE_DTENV environment variableTo support compatibility with earlier versions, uses the USE_DTENV environment variable to activate support for non-ANSI date-time formats.

The USE_DTENV environment variable

To support compatibility with earlier versions, uses the USE_DTENV environment variable to activate support for non-ANSI date-time formats.

When the USE_DTENV environment variable is enabled, the following order or precedence is used:

DBTIME
GL_DATETIME
CLIENT_LOCALE
LC_TIME
LANG (if LC_TIME is not set)
ANSI format

When enabled, the USE_DTENV environment variable is passed from the ESQL/C program to the database server. Enabling it for the database server only has no effect. You must set it for the ESQL/C client program, which then passes it to the database server.

If the database server does not support non-ANSI date-time formats, do not set the USE_DTENV environment variable for the ESQL/C client program.

You must set this environment variable to display localized DATETIME values correctly in a database that uses a non-default locale, and for which the GL_DATETIME environment variable has a non-default setting.

Rate this topic

5 stars 4 stars 3 stars 2 stars 1 star

Comment on this topic.

By clicking this box, you acknowledge that you are NOT a U.S. Federal Government employee or agency, nor are you submitting information with respect to or on behalf of one. HCL provides software and services to U.S. Federal Government customers through its partners immixGroup, Inc. Contact this team at https://hcltechsw.com/resources/us-government-contact. Do not include any personal data in this Comment box.