Constant and Macro

Table 1 lists the constants and macros that can be used in DWS.

Table 1 Constants and macros

Parameter

Description

Example SQL Statements

CURRENT_CATALOG

Specifies the current database.

     SELECT CURRENT_CATALOG;

CURRENT_ROLE

Current role

     SELECT CURRENT_ROLE;

CURRENT_SCHEMA

Current database model

     SELECT CURRENT_SCHEMA;

CURRENT_USER

Current user

     SELECT CURRENT_USER;

LOCALTIMESTAMP

Current session time (without time zone)

     SELECT LOCALTIMESTAMP;

NULL

This parameter is left blank.

SESSION_USER

Current system user

     SELECT SESSION_USER;

SYSDATE

Current system date

     SELECT SYSDATE;

SELECT now()::DATE;

USER

Current user, which is the same as the value of CURRENT_USER.

     SELECT USER;

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