Help Center/ GaussDB(DWS)/ Tool Guide/ DSC/ SQL Syntax Migration Reference/ Teradata Syntax Migration/ Schema Objects and Data Definition Language (DDL)/ Migrating Tables/ SET
Updated on 2024-07-19 GMT+08:00
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SET

SET is a unique feature in Teradata. It does not allow duplicate records. It is addressed using the MINUS set operator. Migration tool supports MULTISET and SET tables. SET table can be used with VOLATILE.

Input: SET TABLE

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CREATE SET VOLATILE TABLE tab1 ... ;
INSERT INTO tab1
SELECT expr1, expr2, ...
FROM tab1, ...
WHERE .... ;

Output:

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CREATE LOCAL TEMPORARY TABLE tab1 
... ; INSERT INTO tab1
SELECT expr1, expr2, ...
FROM tab1, ...
WHERE ....
MINUS 
SELECT * FROM tab1 ;
Parent topic: Migrating Tables