Teradata Parallel Data Pump

Chapter 3: Teradata TPump Commands
DELETE
DELETE
Purpose
Teradata TPump supports the DELETE Teradata SQL statement, which removes rows from a
table.
Syntax
DELETE tname WHERE conditional
;
FROM
HE05B032
where
Syntax Element
tname
WHERE
condition
Description
Table from which rows are to be deleted
tname is qualified either explicitly by database name, or by the current default
database.
Conditional clause identifying the row(s) to delete
The conditional clause uses values from input data record fields as defined by a
FIELD command or TABLE command of the layout referenced by an IMPORT
using this statement.
Usage Notes
The following notes describe how to use DELETE statements following a DML command.
A DELETE statement may also be used in the support environment; normal rules for DELETE
are followed in that case.
Teradata TPump operates only on single table statements so DELETE statements must not
contain any joins.
To delete records from a table, the username specified on the LOGON command must have
DELETE privilege on the specified table.
When the condition(s) of the DELETE statement WHERE clause are evaluated, the result can
be definitely true, definitely false, or indeterminate. If the result is true for a specific row,
Teradata TPump deletes the row. An indeterminate result, due to an abnormal arithmetic
Teradata Parallel Data Pump Reference 111