how to auto increment in sql
CREATE TABLE Persons (
Personid int NOT NULL AUTO_INCREMENT,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Age int,
PRIMARY KEY (Personid)
);
INSERT INTO Persons (FirstName,LastName)
VALUES ('Lars','Monsen');sql server reset auto increment
DBCC CHECKIDENT (mytable, RESEED, 0)sql delete row with auto increment
SET @num := 0;
UPDATE tableName SET id = @num := (@num+1);
ALTER TABLE tableName AUTO_INCREMENT = 1;
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