ClassMethodCreateTable6(){d $SYSTEM.Security.Login("_SYSTEM","SYS")&sql(CREATETABLEPatient(PatNumVARCHAR(16),NameVARCHAR(30),DOBDATE,Primary_PhysicianVARCHAR(16)DEFAULT'A10001982321',CONSTRAINTPatient_PKPRIMARYKEY(PatNum),CONSTRAINTPatient_Physician_FKFOREIGNKEYPrimary_PhysicianREFERENCESPhysician(PhysNum)...
ClassMethodCreateTable8(){&sql(CREATETABLESQLUser.MyStudents(StudentNameVARCHAR(32),StudentDOBDATE,StudentAgeINTEGERCOMPUTECODE{SET{StudentAge}=$PIECE(($PIECE($H,",",1)-{StudentDOB})/365,".",1)}CALCULATED,Q1GradeCHAR,Q2GradeCHAR,Q3GradeCHAR,FinalGradeVARCHAR(2)))ifSQLCODE=0{WRITE!,"Created...
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...
任何其他引用操作都会导致SQLCODE-400错误,并显示如下消息:Error#5600:Feature not supported for sharded class Sample.MyShardT: Foreign Key ON UPDATE action of 'setnull'。 SET NULL-删除行或更新被引用表中的键值时,将检查所有引用表,以查看是否有任何行引用要删除或更新的行。如果是,则该操作会导致引用要删...
字段定义可以引用定义多个字段(属性)的现有嵌入式串行对象,而不是定义字段。字段名后面是串行对象的包名和类名。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...
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][...
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...
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...
Here is the syntax to be used with SQL CREATE TABLE Statement: sql CREATETABLE[IFNOTEXISTS] [Database_name].[Schema_name].table_name ( Column_name datatype [UNIQUE[KEY]|[[PRIMARY] KEY]|CONSTRAINT(NOTNULL|NULL, VISIBLE|INVISIBLE|DEFAULT|CHECK], Column_name datatype [UNIQUE[KEY]|[[PRIMARY...