--测试表创建,a,b,c三个字段均有唯一索引CREATETABLEtable1(aINTNOTNULLUNIQUE,bINTNOTNULLUNIQUE,cINTNOTNULLUNIQUE);--插入三条测试数据INSERTinto table1VALUES(1,1,1);INSERTinto table1VALUES(2,2,2);INSERTinto table1VALUES(3,3,3); 此时table1中已经有了3条记录,a,b,c三个字段都是唯一(UNIQUE)...
REPLACE INTO table_name (field1,field2) values 1. 一次插入多条数据: REPLACE INTO `iphone` VALUES (1,'iphone4','USA',1),(2,'iphone5','USA',1),(3,'iphone6','USA',1),(4,'iphone7','USA',1),(5,'iphone8','USA',1); 1. 三、INSERT IGNORE INTO:检测是否违反主键或唯一索引 ...
需要说明的是,INSERT INTO和INSERT IGNORE INTO只根据“主键值”或“unique索引”进行判断,只要主键值已在数据库中存在,则认为即将插入重复记录。 一次插入一行数据: INSERTIGNOREINTOtable_name (field1,field2)values(value1,value2); 一次插入多行数据: INSERTIGNOREINTO`iphone`VALUES(1,'iphone4','USA',1),...
MySQL insert SELECT 别一个表中 sql in 另一个表,查询中涉及到的两个表,一个books和一个borrow表,具体表的内容如下:书单(books)表:借书表borrowIN一、确定给定的值是否与子查询或列表中的值相匹配。in在查询的时候,首先查询子查询的表,然后将内表和外表做一个笛卡尔
INSERT INTO TABLEPosted by: Adwait Joshi Date: July 18, 2005 11:14AM I have a table named A which has all the columns of table B plus some other columns, I want to insert data in to A from B however during this update I also want to set the values for the columns in A that...
The MySQL INSERT INTO StatementThe INSERT INTO statement is used to insert new records in a table.INSERT INTO SyntaxIt is possible to write the INSERT INTO statement in two ways:1. Specify both the column names and the values to be inserted:...
create table `test`( `id`int(4) notnullauto_increment, `name`char(20) notnull, primary key (`id`) ); 3、往表中插入数据的不同的语法例子: 1)按规矩指定所有列名,并且每列都插入值 mysql> insert into test(id,name) values(1,'oldboy'); ...
有关OceanBase 数据库权限的详细介绍,请参见MySQL 模式下的权限分类。 语法 INSERT[hint_options][IGNORE][INTO]single_table_insert[ONDUPLICATEKEYUPDATEupdate_asgn_list];hint_options:[/*+ [APPEND] enable_parallel_dml PARALLEL(N) */]single_table_insert: table_name[PARTITION(partition_name,...)][(...
REPLACE INTO table1(a, b, c) VALUES(1,2,3); mysql>REPLACEINTOtable1(a,b,c)VALUES(1,2,3);QueryOK,4rowsaffected(0.04sec) 此时查询table1中的记录如下,只剩一条数据了~ mysql>select*fromtable1;+---+---+---+|a|b|c|+---+---+---+|1|2|3|+---+---+---+1rowinset(0.00...
ALTER TABLE `order` DISABLE KEYS ; 插入数据 INSERT INTO `order` VALUES (1,11,'UPDATED'); INSERT INTO `order` VALUES (2,11,'UPDATED'); 启用键 ALTER TABLE `order` ENABLE KEYS; 解锁表 UNLOCK TABLES; key_buffer_size提高扩充键缓冲区 为了对LOAD DATA INFILE和INSERT在MyISAM表得到更快的速度...