Loading Docs/manual.texi +12 −7 Original line number Diff line number Diff line Loading @@ -13662,8 +13662,11 @@ The @code{AUTO_INCREMENT} attribute can be used to generate an unique identity for new rows: @example CREATE TABLE animals (id MEDIUMINT NOT NULL AUTO_INCREMENT, name CHAR(30) NOT NULL, PRIMARY KEY (id)); CREATE TABLE animals ( id MEDIUMINT NOT NULL AUTO_INCREMENT, name CHAR(30) NOT NULL, PRIMARY KEY (id) ); INSERT INTO animals (name) VALUES ("dog"),("cat"),("penguin"), ("lax"),("whale"); SELECT * FROM animals; Loading @@ -13688,9 +13691,11 @@ value for the autoincrement column is calculated as useful when you want to put data into ordered groups. @example CREATE TABLE animals (grp ENUM('fish','mammal','bird') NOT NULL, id MEDIUMINT NOT NULL AUTO_INCREMENT PRIMARY KEY (grp,id)); CREATE TABLE animals ( grp ENUM('fish','mammal','bird') NOT NULL, id MEDIUMINT NOT NULL AUTO_INCREMENT, PRIMARY KEY (grp,id) ); INSERT INTO animals (grp,name) VALUES("mammal","dog"),("mammal","cat"), ("bird","penguin"),("fish","lax"),("mammal","whale"); SELECT * FROM animals ORDER BY grp,id; Loading
Docs/manual.texi +12 −7 Original line number Diff line number Diff line Loading @@ -13662,8 +13662,11 @@ The @code{AUTO_INCREMENT} attribute can be used to generate an unique identity for new rows: @example CREATE TABLE animals (id MEDIUMINT NOT NULL AUTO_INCREMENT, name CHAR(30) NOT NULL, PRIMARY KEY (id)); CREATE TABLE animals ( id MEDIUMINT NOT NULL AUTO_INCREMENT, name CHAR(30) NOT NULL, PRIMARY KEY (id) ); INSERT INTO animals (name) VALUES ("dog"),("cat"),("penguin"), ("lax"),("whale"); SELECT * FROM animals; Loading @@ -13688,9 +13691,11 @@ value for the autoincrement column is calculated as useful when you want to put data into ordered groups. @example CREATE TABLE animals (grp ENUM('fish','mammal','bird') NOT NULL, id MEDIUMINT NOT NULL AUTO_INCREMENT PRIMARY KEY (grp,id)); CREATE TABLE animals ( grp ENUM('fish','mammal','bird') NOT NULL, id MEDIUMINT NOT NULL AUTO_INCREMENT, PRIMARY KEY (grp,id) ); INSERT INTO animals (grp,name) VALUES("mammal","dog"),("mammal","cat"), ("bird","penguin"),("fish","lax"),("mammal","whale"); SELECT * FROM animals ORDER BY grp,id;