第二十章 SQL命令 CREATE TABLE AS SELECT 将现有表中的列定义和列数据复制到新表中。 大纲 CREATE TABLE table-name AS query [shard-key] [WITH table-option] 参数 table-name 要创建的表的名称,指定为有效标识符。表名可以是限定的(schema.table),也可以是非
SqlServer.TransactSql.ScriptDom Microsoft.SqlServer.TransactSql.ScriptDom AbortAfterWaitType AcceleratedDatabaseRecoveryDatabaseOption AddAlterFullTextIndexAction AddFileSpec AddMemberAlterRoleAction AddSearchPropertyListAction AddSensitivityClassificationStatement AddSignatureStatement AdHocDataSource AdHocTab...
SQL Script: Create a Copy of a Table with Data Copy CREATE TABLE TempEmployee as (SELECT EmpId, FirstName, LastName FROM Employee);To create the copy of the Employee table, with just Structure and NO DATA, use the CREATE TABLE AS command, as shown below: ...
%msg&sql(CREATEGLOBALTEMPORARYTABLETempEmp(EMPNUMINTNOTNULL,NAMELASTCHAR(30)NOTNULL,NAMEFIRSTCHAR(30)NOTNULL,CONSTRAINTEMPLOYEEPKPRIMARYKEY(EMPNUM)))ifSQLCODE=0{w!,"表创建"}else{w!,"SQLCODE=",SQLCODE,": ",%msg}}
Oracle provides another way of creating a table.CREATE TABLE temp_employee SELECT * FROM employee In the above statement, temp_employee table is created with the same number of columns and datatype as employee table. BookMark This Page ...
SELECT COLUMN_NAME,DESCRIPTION FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='MyTable' SQL提供了一个%FILE关键字,该关键字用于提供记录表的文件名。 %FILE后面跟着用单引号括起来的文本字符串。 一个表定义只能有一个%FILE关键字; 指定多个会产生SQLCODE -83错误。 SQL提供了可选的%EXTENTSIZE和%NUMROWS关...
To view the temp tables, run the following query. 1 2 3 selectname,create_datefrom[tempdb].[sys].[tables] Query output Create a SYSTEM VERSION temporal table The system version temporal tables were introduced in SQL Server 2016. These tables are special types of tables used to keep the hi...
SQL Server中的CREATE TABLE AS SELECT FROM语句 在SQL Server中,CREATE TABLE AS SELECT FROM语句用于从一个或多个源表中选择数据,并将结果存储在新的目标表中。这个语句非常有用,因为它可以让我们轻松地创建一个包含所需数据的新表,而无需复制和粘贴现有表的结构和数据。
If a temporary table is created with a named constraint and the temporary table is created within the scope of a user-defined transaction, only one user at a time can execute the statement that creates the temp table. For example, if a stored procedure creates a temporary table with a name...
To create one table from another, add a SELECT statement at the end of the CREATE TABLE statement: CREATE TABLE new_tbl AS SELECT * FROM orig_tbl; For more information, see Section 13.1.18.4, “CREATE TABLE ... SELECT Statement”. IGNORE | REPLACE The IGNORE and REPLACE options indi...