Home
SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: ReferenceThe HCL OneDB™ Guide to SQL: Reference contains the reference information for the system catalog tables, data types, and environment variables of the HCL OneDB™ dialect of the SQL language, as implemented in HCL OneDB™. These topics also include information about the stores_demo, sales_demo, and superstore_demo databases that are included with HCL OneDB™.
Environment variablesVarious environment variables affect the functionality of your HCL OneDB™ products. You can set environment variables that identify your terminal, specify the location of your software and define other parameters.
Environment variables in HCL OneDB™ productsThe topics that follow discuss (in alphabetic order) environment variables that HCL OneDB™ database server products and their utilities use.
TZ environment variableThe TZ environment variable is used for setting the time zone. It is used by various time functions to compute times relative to Coordinated Universal Time (UTC), formerly known as Greenwich Mean Time (GMT). The format is specified by the operating system.

TZ environment variable

The TZ environment variable is used for setting the time zone. It is used by various time functions to compute times relative to Coordinated Universal Time (UTC), formerly known as Greenwich Mean Time (GMT). The format is specified by the operating system.

tzn: Three-letter time zone name, such as PST. You must specify the correct offset from local time to UTC (Universal Time Coordinated).
hh: A one- or two-digit difference in hours between UTC and local time. Optionally signed.
mm: Two-digit difference in minutes between UTC and local time.
ss: Two-digit difference in seconds between UTC and local time.
dzn: Three-letter daylight-saving-time zone, such as PDT. If daylight saving time is never in effect in the locality, set TZ without a value for dzn.

For example, if you use Pacific Standard Time with Pacific daylight savings time, set the TZ environment variable to PST8PDT. For more information on setting the TZ environment variable, see your operating system documentation.