Write a SQL query to create a table with three columns: id, name, and age. Add a primary key constraint on the id column. Write a SQL query to create a table with four columns: product_id, product_name, price, and quantity. Ensure that the price column cannot have negative values...
= column_set_name XML COLUMN_SET FOR ALL_SPARSE_COLUMNS <table_constraint> ::= [ CONSTRAINT constraint_name ] { { PRIMARY KEY | UNIQUE } [ CLUSTERED | NONCLUSTERED ] ( column_name [ ASC | DESC ] [ ,... n ] ) [ WITH FILLFACTOR = fillfactor | WITH ( <index_option> [ ,... ...
CREATE FUNCTION (SQL) CREATE FUNCTION (外部) 創建地點 CREATE MATERIALIZED VIEW CREATE RECIPIENT CREATE SCHEMA CREATE SERVER CREATE SHARE CREATE STREAMING TABLE CREATE TABLE 數據表屬性和數據表選項 CREATE TABLE 使用 Hive 格式 CREATE TABLE CONSTRAINT ...
百度试题 题目SQL在CREATE TABLE语句中提供了完整性约束命名子句CONSTRAINT,用来对完整性约束命名,从而可以灵活地增加、删除完整性约束条件 相关知识点: 试题来源: 解析 √ 反馈 收藏
= column_set_name XML COLUMN_SET FOR ALL_SPARSE_COLUMNS <table_constraint> ::= [ CONSTRAINT constraint_name ] { { PRIMARY KEY | UNIQUE } [ CLUSTERED | NONCLUSTERED ] ( column_name [ ASC | DESC ] [ ,... n ] ) [ WITH FILLFACTOR = fillfactor | WITH ( <index_option> [ ,... ...
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,ClassType=Persistent,并且类包含Final关键字,表...
To create a table with a primary key, we can write the following command. In MySQL CREATETABLECompanies (idint,namevarchar(50), addresstext, emailvarchar(50), phonevarchar(10), PRIMARYKEY(id) ); In Oracle and SQL Server CREATETABLECompanies (idintNOTNULLPRIMARYKEY,namevarchar(50), ...
Drop Table Truncate Table Create Table 创建表 AI检测代码解析 CREATE [TEMPORARY] [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name -- (Note: TEMPORARY available in Hive 0.14.0 and later) [(col_name data_type [COMMENT col_comment], ... [constraint_specification])] ...
在SQL Server 2008 R2 中创建新表。 Transact-SQL 语法约定语法 复制 CREATE TABLE [ database_name . [ schema_name ] . | schema_name . ] table_name ( { <column_definition> | <computed_column_definition> | <column_set_definition> | [ <table_constraint> ] [ ,...n ] } ) [ ON {...
[ WITH OPTIONS ] [ column_constraint [ ... ] ] | table_constraint } [, ... ] ) ] { FOR VALUES partition_bound_spec | DEFAULT } [ PARTITION BY { RANGE | LIST | HASH } ( { column_name | ( expression ) } [ COLLATE collation ] [ opclass ] [, ... ] ) ] [ USING ...