%msg&sql(CREATEGLOBALTEMPORARYTABLETempEmp(EMPNUMINTNOTNULL,NAMELASTCHAR(30)NOTNULL,NAMEFIRSTCHAR(30)NOTNULL,CONSTRAINTEMPLOYEEPKPRIMARYKEY(EMPNUM)))ifSQLCODE=0{w!,"表创建"}else{w!,"SQLCODE=",SQLCODE,": ",%msg}}
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: ...
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...
创建这些表的 SQL 语句保存在示例\CreateTable\<rdbms 名="">文件夹下的CreateTable<表名>.sql文件中。例如在 >PostgreSQL 中创建Product表所使用的 SQL 语句,就保存在示例代码\CreateTable\PostgreSQL文件夹下的CreateTableProduct.sql文件中。 CreateTableProduct.sql文件包含了创建Product表时用到的 SQL 语句(代码...
要确定当前设置,请调用$SYSTEM.SQL.CurrentSettings()方法,该方法显示a Do classes created by a DDL CREATE TABLE statement define a bitmap extent index。 如果在创建位图索引后,对自动定义位图范围索引的表调用CREATE BITMAPEXTENT INDEX,则先前定义的位图范围索引将重命名为CREATE BITMAPEXTENT INDEX语句指定的...
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。
CREATETABLETestTableAS SELECTcustomername, contactname FROMcustomers; Exercise? What is the primary purpose of the SQLCREATE TABLEstatement? To create a new table in a database To insert data into a table To join a table To delete a table from a database ...
AS select_statement 使用select 語句中的數據填入數據表。 範例 SQL複製 --Use hive formatCREATETABLEstudent (idINT,nameSTRING, ageINT)STOREDASORC;--Use data from another tableCREATETABLEstudent_copySTOREDASORCASSELECT*FROMstudent;--Specify table comment and propertiesCREATETABLE...
The syntax for the CREATE TABLE AS statement when copying all of the columns in SQL is: CREATE TABLE new_table AS (SELECT * FROM old_table); Example Let's look at an example that shows how to create a table by copying all columns from another table. ...
CREATETABLE{database_name.schema_name.table_name|schema_name.table_name|table_name} [ (column_name[ ,...n ] ) ]WITH(<distribution_option>-- required[ ,<table_option>[ ,...n ] ] )AS<select_statement>OPTION<query_hint>[;]<distribution_...