What is the equivalent of MSSQL IDENTITY
Columns in MySQL? How would I create this table in MySQL?
CREATE TABLE Lookups.Gender ( GenderID INT IDENTITY(1,1) NOT NULL, GenderName VARCHAR(32) NOT NULL );
An identity column is a column (also known as a field) in a database table that is made up of values generated by the database. This is much like an AutoNumber field in Microsoft Access or a sequence in Oracle.
NVARCHAR stands for National Varchar in MySQL. Let us first create a table with one of the columns “StudentName” as NVARCHAR − mysql> create table DemoTable ( StudentName NVARCHAR(40), StudentCountryName VARCHAR(50) ); Query OK, 0 rows affected, 1 warning (0.49 sec)
Auto-increment allows a unique number to be generated automatically when a new record is inserted into a table. Often this is the primary key field that we would like to be created automatically every time a new record is inserted.
Remarks. After an INSERT, SELECT INTO, or bulk copy statement is completed, @@IDENTITY contains the last identity value that is generated by the statement. If the statement did not affect any tables with identity columns, @@IDENTITY returns NULL.
CREATE TABLE Lookups.Gender ( GenderID INT NOT NULL AUTO_INCREMENT, GenderName VARCHAR(32) NOT NULL );
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