Warning: The important part of this syntax is theWHEREclause, as this is what allows you to specify exactly what rows of data should get deleted. Without it, a command likeDELETE FROMtable_name;would execute correctly, but it would delete every row of data from the table. Be aware that ...
DELETEFROMtableWHEREcondition;Code language:SQL (Structured Query Language)(sql) In this syntax: First, specify the name of the table from which you want to delete data in theDELETE FROMclause. Second, specify a condition in theWHEREclause filter rows to delete. If you omit theWHEREclause, ...
The SQL TRUNCATE command is used to delete all the rows from the table and free the space containing the table.Syntax to TRUNCATE a table:TRUNCATE TABLE table_name; SQL TRUNCATE Statement ExampleTo delete all the rows from employee table, the query would be like, TRUNCATE TABLE employee; ...
syntaxsql -- Syntax for Azure Synapse Analytics and Microsoft Fabric[WITH<common_table_expression>[ ,...n ] ]DELETE[database_name. [ schema ] . | schema. ]table_nameFROM[database_name. [ schema ] . | schema. ]table_nameJOIN{<join_table_source>}[ ,...n ]ON<join_condition>[WHERE...
DELETE- 从数据库中删除数据 INSERT INTO- 向数据库中插入新数据 CREATE DATABASE- 创建新数据库 ALTER DATABASE- 修改数据库 CREATE TABLE- 创建新表 ALTER TABLE- 变更(改变)数据库表 DROP TABLE- 删除表 CREATE INDEX- 创建索引(搜索键) DROP INDEX- 删除索引 ...
The below syntax is used to remove multiple databases from the SQL Server is as follows: DROP DATABASE Database_Name_1, Database_Name_2, Database_Name_3, Database_Name_N; Examples of DROP Database in SQL We will execute the SHOW DATABASES command to check which databases are residing ...
syntaxsql -- SQL Server SyntaxALTERDATABASE{database_name|CURRENT} {MODIFYNAME=new_database_name|COLLATEcollation_name|<file_and_filegroup_options>|SET<option_spec>[ ,...n ] [WITH<termination>] } [;]<file_and_filegroup_options>::=<add_or_modify_files>::=<filespec>::=<add_or_modify...
database_name.schema_name. | database_name. [ schema_name ] . | schema_name. ] table_or_view_name } syntaxsql Copy -- Syntax for Azure Synapse Analytics and Microsoft Fabric [ WITH <common_table_expression> [ ,...n ] ] DELETE [database_name . [ schema ] . | schema. ] ...
SQL 中最重要的 DDL 语句:CREATEDATABASE-创建新数据库ALTERDATABASE-修改数据库CREATETABLE-创建新表ALTERTABLE-变更(改变)数据库表DROPTABLE-删除表CREATEINDEX-创建索引(搜索键)DROPINDEX-删除索引 (该部分转自https://www.w3school.com.cn/sql/sql_syntax.asp) ...
14.1.17 CREATE SERVER Syntax 14.1.18 CREATE TABLE Syntax 14.1.18.1 CREATE TABLE ... LIKE Syntax 14.1.19 CREATE TABLESPACE Syntax 14.2.1 CALL Syntax 14.2.2 DELETE Syntax 14.2.3 DO Syntax 14.2.4 HANDLER Syntax 14.2.5 INSERT Syntax 14.2.7 LOAD XML Syntax ...