This statement attempts to insert a row and ignores it if a duplicate key is encountered. INSERTINTOusers(user_id,username)VALUES(1,'johndoe')ONDUPLICATEKEYUPDATEusername='john_updated'; This example updates the `username` if a duplicate key exists. ...
INSERT INTO ExampleThe following SQL statement inserts a new record in the "Customers" table:Example INSERT INTO Customers (CustomerName, ContactName, Address, City, PostalCode, Country) VALUES ('Cardinal', 'Tom B. Erichsen', 'Skagen 21', 'Stavanger', '4006', 'Norway'); ...
使用prepared statement，可以对 insert 语句进行 Prepared，提高插入数据的速度。例如：```sql PREPARE st...
InsertStatement(table: DatabaseTargetType, *fields: Any)¶Bases: WriteStatementA statement for insert operations on Table.Parameters: table (mysqlx.Table)– The Table object. *fields –The fields to be inserted.property changed: bool¶ True if this statement has changes. Type: bool ...
importjava.sql.Connection;importjava.sql.DriverManager;importjava.sql.PreparedStatement;importjava.sql.SQLException;publicclassMySQLInsertExample{publicstaticvoidmain(String[]args){Stringurl="jdbc:mysql://localhost:3306/database_name";Stringusername="username";Stringpassword="password";StringinsertQuery="INSE...
statement-based格式: Binlog只保存主节点上执行的sql语句,从节点将其复制到本地重新执行 row-based格式: Binlog会记录主节点的每一行所有列的数据的变更信息,从节点会复制并执行每一行的变更到本地 第一种格式只写入了执行的 sql 语句,虽然日志量会很少,但是有下列缺点: ...
Conditional INSERT statementPosted by: Jon Lewis Date: October 09, 2009 09:45AM Is is possible to write an INSERT statement where the schema it writes to is conditional? I have a stored procedure (actually a trigger) that I want to insert a record in a test database if the user is...
Statement stmt=null;try{ conn=jt.getDataSource().getConnection(); conn.setAutoCommit(false); stmt=conn.createStatement(); String ctime="2017-11-01 00:00:01";intindex=0;for(inti=0;i<10000;i++) { String insertSql="insert into emp(name,age,cdate) values "; ...
利用mysql的LAST_INSERT_ID()方法获取插入记录的主键,select LAST_INSERT_ID()可以在插入数据后,查询并返回刚插入数据的主键(但是单独执行这条语句只会返回0)。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 <insert id="insertUser"parameterType="com.danny.mybatis.po.User"><selectKey keyProperty="user...
The target table of the INSERT statement may appear in the FROM clause of the SELECT part of the query, or as the table named by TABLE. However, you cannot insert into a table and select from the same table in a subquery. When selecting from and inserting into the same table, MySQL...