Using DDL Statements in SQL - Learn how to use DDL statements in SQL for database management, including CREATE, ALTER, and DROP commands.
数据定义语言 (Data Definition Language, DDL),是SQL语言集中对数据库内部的对象结构进行创建,删除,修改等的操作语言,这些数据库对象包括database(schema)、table、view、index等。核心语法由CREATE、ALTER与DROP三个所组成。DDL并不涉及表内部数据的操作。 在某些上下文中,该术语也称为数据描述语言,因为它描述了数据...
* table, we MUST NOT invoke any server-side data collection functions * (for instance, pg_get_...
DDL Triggers SQL Server Triggers SQL Ebook Download View all Functions in SQL Server: Practical Guide Read by 9k people Download Now! Learn View all Learn SSRS In 11 Hours Leaderboard View all Tuhin Paul +0 Dashrath Hapani -5
展示:SHOW DATABASES/SCHEMAS, TABLES, TBLPROPERTIES, VIEWS, PARTITIONS, FUNCTIONS, INDEX[ES], COLUMNS, CREATE TABLE; 描述:DESCRIBE DATABASE/SCHEMA, table_name, view_name, materialized_view_name。 HQL DML 语法包括: 导入:Load file to table; ...
适用范围:SQL Server 列出用于在 SQL Server 中支持统计语义搜索的 Transact-SQL 语句和数据库对象。 有关支持全文搜索的语句和数据库对象的列表,请参阅全文搜索 DDL、函数、存储过程和视图。 数据定义语言 (DDL) 语句 Object更多信息 ALTER FULLTEXT INDEX (Transact-SQL)对表和...
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SQL - Using the Group Functions SQL - Get Data from Multiple Tables SQL - Subqueries to Solve Queries SQL - Using the Set Operators SQL - Manipulating Data SQL - Using DDL Statements SQL - Creating Other Schema Objects SQL - The SQL SELECT Statement SQL - Restricting and Sorting Data SQL ...
有关更多信息,请参阅 PostgreSQL 文档中的 Sequence Manipulation Functions。 CREATE SEQUENCE 不支持以下选项。 CREATE [{ TEMPORARY | TEMP} | UNLOGGED] SEQUENCE [[ NO ] CYCLE] 有关更多信息,请参阅 PostgreSQL 文档中的 CREATE SEQUENCE。 ALTER SEQUENCE 不支持以下选项。 ALTER SEQUENCE [[ NO ] CYCLE...
A stored procedure is a set of SQL statements for achieving specific functions and is stored in the database after compiling. Users can specify a name and provide parameters (if necessary) to execute the stored procedure. The following table lists the related SQL statements. Table 11 SQL statem...