SQL - Expressions SQL - Comments SQL Database SQL - Create Database SQL - Drop Database SQL - Select Database SQL - Rename Database SQL - Show Databases SQL - Backup Database SQL Table SQL - Create Table SQL - Show Tables SQL - Rename Table ...
The SQL CREATE TABLE command is used to create a database table. It can be used to create different types of database tables, such astemporary tables. However, in this article, I’ll only cover the regular database table. SQL Create Table Syntax The syntax for the SQL create table state...
ix Data Warehouse Service SQL Syntax 1 GaussDB(DWS) SQL Overview 1 GaussDB(DWS) SQL Overview What Is SQL? SQL is a standard computer language used to control the access to databases and manage data in databases. SQL provides different statements to enable you to: ● Query data. ● Insert,...
Thank you for a reasonable feature request. Yes, to be consistent within its own extensions of SQL, MySQL should support IF EXISTS clause in RENAME statetement. As for your second problem, "what if new_table_name already exists?", the only right and consistent way is to give error message...
SQLite - ALIAS Syntax - You can rename a table or a column temporarily by giving another name, which is known as ALIAS. The use of table aliases means to rename a table in a particular SQLite statement. Renaming is a temporary change and the actual table
Msg 102, Level 15, State 1, Line 7 Incorrect syntax near 'RENAME'. This above error keeps occurring as I try to rename a column in my table syntax ALTER TABLE Project RENAME COLUMN ProjectNO to Project_NO;
CREATE/ALTER/RENAME/DROP TABLE Partially supported Temporary session tables cannot be restored. DDL CREATE/ALTER/DROP TABLE PARTITION/SUBPARTITION Supported - DDL CREATE/ALTER/DROP INDEX Partially supported The ALTER INDEX REBUILD option is equivalent to REINDEX and is not supported currently. DD...
ALTER TABLE PARTITION modifies table partitions, including adding, deleting, splitting, merging, clearing, swapping, and renaming partitions, moving partition tablespaces
In this page, we list the SQL syntax for each of the SQL commands in this tutorial, making this an easy reference for someone to learn SQL. For detailed explanations of each SQL syntax, please go to the individual section by clicking on the keyword.The...
ALTER table user ADD INDEX user_index(id) 创建唯一索引 CREATE UNIQUE INDEX user_index ON user (id); 删除索引 ALTER TABLE user DROP INDEX user_index; 约束 SQL 约束用于规定表中的数据规则。 如果存在违反约束的数据行为,行为会被约束终止。 约束可以在创建表时规定(通过 CREATE TABLE 语句),或者在表...