<insert id="add"parameterType="EStudent"><selectKey keyProperty="id"resultType="_long"order="BEFORE">selectCAST(RANDOM*100000asINTEGER)aFROMSYSTEM.SYSDUMMY1</selectKey>insert intoTStudent(id,name,age)values(#{id},#{name},#{age})</insert 注意:mapper接口返回值依然是成功插入的记录数,但不同的...
1 背景:RDBMS中insert使用(insert+values) 在MySQL这样的RDBMS中,通常是insert+values的方式来向表插入数据,并且速度很快。这也是RDBMS中插入数据的核心方式。 INSERT INTO table_name(field1,field2,...fieldN)VALUES(value1,value2,...valueN); 假如说对Hive的定位不清,把Hive当成RDBMS来使用,也使用insert+val...
hive> select * from test; OK 1 a 2 b 3 c 4 d 1 a 2 b 3 c 4 d Time taken: 0.302 seconds, Fetched: 8 row(s) 1. 3. 插入数据 标准语法: INSERT OVERWRITE TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...) [IF NOT EXISTS]] select_statement1 FROM from_statemen...
insert into t(name,id) values('xiaofang5',7); # 指定插入的字段,且改变字段顺序 insert into t value(8,'nan','longshuai3'); # 使用value,而非values 1. 2. 3. 4. 5. 6. 7. 查看插入的数据: MariaDB [test]> select * from t; +---+---+---+ | id | sex | name | +---+...
其中:insert into table table_name可以简写为insert into table_nameINSERTINTOapps (id,app_name,url)VALUES(1,'Aliyun','https://www.aliyun.com');--复制apps的表数据追加至websites表INSERTINTOwebsites (id,name,url)SELECTid,app_name,urlFROMapps;--执行select语句查看表websites中的数据。SELECT*...
CREATE TABLE dbo.T1 ( column_1 int IDENTITY, column_2 uniqueidentifier, ); GO INSERT INTO dbo.T1 (column_2) VALUES (NEWID()); INSERT INTO T1 DEFAULT VALUES; GO SELECT column_1, column_2 FROM dbo.T1; G. 将数据插入到用户定义类型列中 下面的 Transact-SQL 语句将三行插入到 PointValue ...
CREATETABLEtest_target (aBIGINT, bBIGINT) DISTRIBUTEDBYHASH(a)PARTITIONBYVALUE(b) LIFECYCLE10; 初始化源表test_source。 INSERTINTOtest_sourceVALUES(1,1);INSERTINTOtest_sourceVALUES(1,2);INSERTINTOtest_sourceVALUES(1,3);INSERTINTOtest_sourceVALUES(2,1);INSERTINTOtest_sourceVALUES(2,2);INSERT...
SELECTcolumn1,column2,column3, ... FROMtable1 WHEREcondition; Demo Database In this tutorial we will use the well-known Northwind sample database. Below is a selection from the "Customers" table: CustomerIDCustomerNameContactNameAddressCityPostalCodeCountry ...
This statement is a combination of two different statements: INSERT INTO and SELECT.The INSERT INTO statement is one of the most fundamental and frequently used statements in database management and requires only the name of the table and the values to be inserted. However, it is important to...
( column_1 int IDENTITY, column_2 VARCHAR(30)); GO INSERT T1 VALUES ('Row #1'); INSERT T1 (column_2) VALUES ('Row #2'); GO SET IDENTITY_INSERT T1 ON; GO INSERT INTO T1 (column_1,column_2) VALUES (-99, 'Explicit identity value'); GO SELECT column_1, column_2 FROM T1; ...