“SQL -Testfragen” Code-Antworten

SQL -Testfragen

CREATE TABLE mytables(id INT identity(1,1) ,colName NVARCHAR(255));
INSERT INTO mytables(colName)
VALUES('***');
INSERT INTO mytables(colName)
VALUES('bla');

BEGIN TRANSACTION
DELETE FROM myTables
WHERE colName = '***';
SELECT * FROM myTables; -- Result #1
ROLLBACK TRANSACTION

SELECT * FROM myTables; -- Result #2