How AUTO_INCREMENT behaves depending on the NO_AUTO_VALUE_ON_ZERO SQL mode: Server SQL Modes. How to use the LAST_INSERT_ID() function to find the row that contains the most recent AUTO_INCREMENT value: Inform
You can retrieve the most recent automatically generatedAUTO_INCREMENTvalue with theLAST_INSERT_ID()SQL function or themysql_insert_id()C API function. These functions are connection-specific, so their return values are not affected by another connection which is also performing inserts. ...
1.首先建表和索引(以下使用的sql版本是5.5.54) /*课程表*/createtablecourse( idintprimarykeyauto_increment,/*主键自增*/titlevarchar(50)notnull,/*标题*/category_idintnotnull,/*属于哪个类目*/school_idintnotnull,/*属于哪个学校*/buy_timesintnotnull,/*购买次数*/browse_timesintnotnull/*浏览次数*...
CREATE TABLE `user` (`id` int(10) AUTO_INCREMENT,`user_id` int(10),`gf_phone` varchar(1000),`gf_name` varchar(100),PRIMARY KEY (`id`),KEY `user_id` (`user_id`)) ENGINE=InnoDB; 用户的 user_id ,女朋友的名字gf_name、女朋友的电话号码gf_phone user_id 索引 模拟数据 # 清空表tr...
GENERATED { ALWAYS |依預設 } AS IDENTITY [ [ [ START WITH start ] [ INCREMENT BY step ] ] 適用於: Databricks SQL Databricks Runtime 10.4 LTS 和更新版本 定義識別欄位。 當您寫入數據表,且未提供識別欄位的值時,它將自動指派一個唯一且統計上遞增(若 step 為負數,則遞減)的數值。 只有...
createtabletest\_order(idintauto\_incrementprimarykey,user\_idint,order\_idint,order\_statustinyint,create\_datedatetime);createtabletest\_orderdetail(idintauto\_incrementprimarykey,order\_idint,product\_namevarchar(100),cntint,create\_datedatetime);createindexidx\_userid\_order\_id\_createdate...
_boot { // the query we want to execute exec = <<SQL CREATE TABLE IF NOT EXISTS `users` ( `ID` INT UNSIGNED AUTO_INCREMENT PRIMARY KEY, `name` VARCHAR(30) DEFAULT "@anonymous", `email` VARCHAR(30) DEFAULT "@anonymous", `password` VARCHAR(200) DEFAULT "", `time` INT UNSIGNED )...
Autoincrement existing column sql server Automated Conversion from T-SQL to ANSI SQL? Automatic Truncate Long Strings while inserting data. Automatically import the CSV files from a Folder Automatically UpperCase ALL MS SQL Server Keywords AutoNumber in T-SQL Select Statement AVG ->Operand data t...
id int auto_increment primary key, user_id int, order_id int, order_status tinyint, create_date datetime ); create table test_orderdetail ( id int auto_increment primary key, order_id int, product_name varchar(100), cnt int, create_date datetime ...
id int auto_increment primary key, user_id int, order_id int, order_status tinyint, create_date datetime ); create table test_orderdetail ( id int auto_increment primary key, order_id int, product_name varchar(100), cnt int, create_date datetime ...