Teradata Parallel Data Pump

Chapter 3: Teradata TPump Commands
IF, ELSE, and ENDIF
IF, ELSE, and ENDIF
Purpose
Teradata TPump provides a structure of IF, ELSE, and ENDIF commands for the conditional
control of execution processes. Conditional execution works as follows:
Syntax
.IF
conditional expression
statements to execute if TRUE
THEN
;
.ELSE
;
.ENDIF ;
statements to resume with
statements to execute if FALSE
3021A024
where
Syntax Element
conditional
expression
statements to execute
if TRUE
statements to execute
if FALSE
statements to resume
with
Description
User-defined variables or pre-defined system variables following the IF
command, whose condition (TRUE or FALSE) triggers the execution of
alternative groups of statements
Statements to be executed whenever the conditional expression following
the IF command evaluates as TRUE
Statements following the optional ELSE command which execute only
when the conditional expression following the IF command evaluates as
FALSE
Statements following the ENDIF command to terminate the conditional
statement execution process and resume the normal command sequence
Usage Notes
The conditional expression in the IF command may consist of either user-defined variables or
predefined system variables.
The ELSE command clause is optional. ELSE is used only when there are statements to be
executed when the condition is evaluated as false. Conditional expression is an expression
144 Teradata Parallel Data Pump Reference