ClassMethodCreateTable6(){d $SYSTEM.Security.Login("_SYSTEM","SYS")&sql(CREATETABLEPatient(PatNumVARCHAR(16),NameVARCHAR(30),DOBDATE,Primary_PhysicianVARCHAR(16)DEFAULT'A10001982321',CONSTRAINTPatient_PKPRIMARYKEY(PatNum),CONSTRAINTPatient_Physician_FKFOREIGNKEYPrimary_PhysicianREFERENCESPhysician(PhysNum)...
%msg&sql(CREATEGLOBALTEMPORARYTABLETempEmp(EMPNUMINTNOTNULL,NAMELASTCHAR(30)NOTNULL,NAMEFIRSTCHAR(30)NOTNULL,CONSTRAINTEMPLOYEEPKPRIMARYKEY(EMPNUM)))ifSQLCODE=0{w!,"表创建"}else{w!,"SQLCODE=",SQLCODE,": ",%msg}}
CREATE TABLE test_sample(id int4,message text,create_time timestamp(6) without time zone default clock_timestamp()); INSERT INTO test_sample(id,message) SELECT n, md5(random()::text) FROM generate_series(1,1500000) n; SELECT * FROM test_sample LIMIT 1; 1. 2. 3. 4. 5. 6. 抽样...
CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } [ AS FileTable ] ( { <column_definition> | <computed_column_definition> | <column_set_definition> | [ <table_constraint> ] [ ,... n ] | [ <table_index> ] } [ ,... n ] [ PERIOD...
第十五章 SQL命令 CREATE TABLE(二) 第十五章 SQL命令 CREATE TABLE(二) 全局临时表 指定GLOBAL TEMPORARY关键字将表定义为全局临时表。表定义是全局的(对所有进程都可用);表数据是临时的(在进程期间持续存在)。相应的类定义包含一个附加的类参数SQLTABLETYPE=“GLOBAL TEMPORARY”。与标准的 IRIS表一样,Class...
1>.查看CREATE TABLE的帮助信息 mysql>?CREATETABLEName:'CREATE TABLE'Description: Syntax:CREATE[TEMPORARY]TABLE[IF NOT EXISTS]tbl_name (create_definition,...)[table_options][partition_options]CREATE[TEMPORARY]TABLE[IF NOT EXISTS]tbl_name[(create_definition,...)][table_options][partition_options][...
simplify the process, U-SQL provides the ability to create a table from a U-SQL query expression. TheCREATE TABLE ASstatement will infer the schema from the query expression and will create a clustered table, thus the clustered index needs to be provided as part of theCREATE TABLE AS...
SQL CREATE TABLE | SELECT Statement Syntax Here is the syntax to be used with SQL CREATE TABLE with SELECT statement: CREATE TABLE table_name [AS] SELECT * FROM exist_table ; CREATE TABLE table_name AS (SELECT column1_name, column2_name, column3_name... ...
例如,Office Sample.Address。不要指定数据类型或数据约束;可以指定%DESCRIPTION。不能使用CREATE TABLE创建嵌入式串行对象。 注:我们建议避免创建列超过400列的表。重新设计数据库,以便:这些列变成行;列在几个相关的表中划分;或者数据以字符流或位流的形式存储在较少的列中。 字段名称 字段名遵循标识符约定,具有与...
%CLASSPARAMETER MANAGEDEXTENT 0 DEFAULTGLOBAL:默认情况下,CREATE TABLE用生成的全局名称为创建的表创建IDKEY索引,例如^EPgS.D8T6.1; 其他索引使用生成的具有唯一整数后缀的相同全局名称。这个例子指定%CLASSPARAMETER DEFAULTGLOBAL = '^GL.EMPLOYEE'作为索引的显式全局名称。可以使用DEFAULTGLOBAL指定扩展的全局引用,或者...