在SQL中,INSERT INTO ... SELECT语句用于将一个或多个记录从一个表复制到另一个表。这是一个非常强大的工具,尤其当你需要根据另一个表的数据来填充新的记录时。 基本的语法是这样的: sql INSERTINTOtarget_table (column1, column2, column3, ...) SELECTcolumn1, column2, column3, ... FROMsource_...
INSERT INTO table_a (col1a, col2a, col3a, …) SELECT col1b, col2b, col3b, … FROM table_b WHERE table_b.col1 = x; Example: INSERT data of big orders from the table of total orders, where the total amount of money is larger than $10,000: INSERT INTO sales.big_orders (...
Example INSERTINTOCustomers (CustomerName, ContactName, Address, City, PostalCode, Country) VALUES('Cardinal','Tom B. Erichsen','Skagen 21','Stavanger','4006','Norway'); The selection from the "Customers" table will now look like this: ...
SQL INSERT statement – insert one row into a table The following illustrates theINSERTstatement that inserts a single row into an existing table. INSERTINTOtable(column1, column2,...)VALUES(value1, value2,...);Code language:SQL (Structured Query Language)(sql) ...
在SQL中,INSERT语句用于向数据库表中插入新的行。INSERT语句的用法有以下几种: 插入全部列:INSERT INTO table_name VALUES (value1, value2, …); 例如:INSERT INTO customers VALUES (1, ‘John’, ‘Doe’, ‘john@example.com’); 插入指定列:INSERT INTO table_name (column1, column2, …) VALUES...
看完这篇文章你会学习到以下内容: 1. 在创建或者写复杂逻辑时,做好备份 两种方法介绍: 1)INSERT INTO Table SELECT * FROM TABLE 2)CREATE TABLE AS ... ... Select * from TABLE 两者区别: INSERT INTO …
INSERT INTO target_table (column1, column2) SELECT column1, column2FROMsource_table LIMIT batch_size OFFSET offset; IF NOT FOUND THEN EXIT; END IF; COMMIT; -- 每批提交一次事务 offset := offset + batch_size; END LOOP; END $$;
SQL INSERT INTO is a command used to add new records into a database table. It’s like a librarian who meticulously places each new book (data) into the right shelf (table). See example: INSERTINTOtable_name(column1,column2,column3,...)VALUES(value1,value2,value3,...); ...
INSERT 语句始终完全记入日志,只有在将 OPENROWSET 函数与 BULK 关键字一起使用或者在使用 INSERT INTO <target_table> SELECT <columns> FROM <source_table> 时除外。 这些操作可进行最小日志记录。 有关详细信息,请参阅本主题前面的“大容量加载数据的最佳做法”一节。 安全性 在链接服务器的连接过程中,发送服...
CREATE TABLE [StudentScores] ( [UserName] NVARCHAR(20), --学生姓名 [Subject] NVARCHAR(30), --科目 [Score] FLOAT, --成绩 ) INSERT INTO [StudentScores] SELECT 'Nick', '语文', 80 INSERT INTO [StudentScores] SELECT 'Nick', '数学', 90 ...