insert [into] <表名> (列名) values (列值) 例:insert into Strdents (姓名,性别,出生日期) values ('开心朋朋','男','1980/6/15') 1.2【将现有表数据添加到一个已有表】 insert into <已有的新表> (列名) select <原表列名> from <原表名> 例:insert into tongxunlu ('姓名','地址','电...
To insert data into your SQL table, you can use the SQL INSERT INTO query. But how does it work? That's what we're going to look at in this article. What is an SQL INSERT INTO request? SQL INSERT INTOis one of the mostcommonly used commands in the SQL language.And with good rea...
insertintotbl_name (col1,col2)values(15,col1*2) ##正确insertintotbl_name (col1,col2)values(col1*2,15) ##错误 案例演示: ## 修改sid字段,添加auto_increment属性 mysql>altertablestudents modify sidintauto_increment; Query OK,2rowsaffected (0.23sec) Records:2Duplicates:0Warnings:0## 修改ge...
一、INSERT 语句 1、INSERT 语句的语法 插入单行记录语法:INSERT INTOtable [(column [, column...])]VALUES(value [,value...]); 该语句用VALUES子句添加行到列表中,一次仅一行。在INSERT子句中字段列表不是必须的,若不用字段列表,值必须按照表中字段的默认顺序排列。为使语句更清楚,在INSERT子句中使用字段列...
要向现有的表中添加新数据,可以使用SQL的INSERT INTO语句。以下是一个基本的语法示例: INSERTINTOtable_name(column1,column2,column3,...)VALUES(value1,value2,value3,...); 其中,table_name是要插入数据的表名,column1, column2, column3, ...是要插入数据的列名,而value1, value2, value3, ...则...
INSERTINTOCustomersVALUES(5,'Harry','Potter',31,'USA'); Run Code Here, the SQL command inserts the new row serially in each column. Note:If we don't specify column names, the order of columns in the database table must match the order of values in the SQL query. We also need to ...
DELETE FROM 表名 [WHERE 条件]; TRUNCATE 表名;TRUNCATE是DDL语句,它只能删除表中的所有数据,不能根据条件删除,也不能删除表结构; DROP TABLE 表名;直接删除表; 如果表中含有外键约束,DDL语句不能直接删除表,只能先删除外键约束才能删除表。 DQL 数据查询语言(Data QueryLanguage,DQL)用于查询数据,以SELECT为核...
INSERTINTOtable_name(column1,column2,column3, ...) VALUES(value1,value2,value3, ...); 2. If you are adding values for all the columns of the table, you do not need to specify the column names in the SQL query. However, make sure the order of the values is in the same order ...
INSERT INTO SELECT Syntax Copy all columns from one table to another table: INSERTINTOtable2 SELECT*FROMtable1 WHEREcondition; Copy only some columns from one table into another table: INSERTINTOtable2(column1,column2,column3, ...) SELECTcolumn1,column2,column3, ... ...
INSERT INTO(insert into) - 向数据库中插入新数据 UPDATE(update) - 更新数据库中的数据 DELETE(delete) - 从数据库中删除数据 TRUNCATE TABLE-清除表数据 DROP TABLE-删除表 说明:SQL不区分大小写,为方便写作,下面关键字博主全部用小写; 后面的分号一般SQL不强制要求,最好写上。这里中英文分号可能有误,请注意...