ON table_name (column_name,column_name) 34:视图 一:创建视图 CREATE VIEW 视图名 AS SELECT 列名 FROM 表名 WHERE 条件 二:查询视图 select * from 视图名 三:删除视图 DROP VIEW 视图名 35:存储过程:是一组预编译的T-SQL语句 一:执行常用的系统存储过程 EXEC sp_database
drop table table_name --- 完全删除表 alter table --- 修改数据库表结构 alter table database.owner.table_name add column_name char(2) null .. sp_help table_name --- 显示表已有特征 create table table_name (name char(20), age smallint, lname varchar(30)) insert into table_name selec...
T-SQL修改表数据 INSERT语句 语法: INSERT [TOP(expression) [PERCENT]] [INTO] { <object> | rowset_function_limited [ WITH ( <Table_Hint_Limited> [ ...n ] ) ] /*指定表提示*/ | view_name } /*视图名*/ { [(column_list) ] /*指定列名*/ [<OUTPUT Clause> ] {VALUES /*指定列名的...
简介:T-SQL笔记4:表 本章摘要 1:CREATE 2:SQL Server 2005 Data Types 3:Adding aColumn to an Existing Table 4:Changing a Column Definition 5:Creating aComputed ... T-SQL笔记4:表 本章摘要 1:CREATE 2:SQL Server 2005 Data Types 3:Adding aColumn to an Existing Table 4:Changing a Column ...
TSQL–标示列、GUID 、序列 –1. IDENTIY 列不能为空,不能设默认值,创建后不能使用ALTER TABLE TableName ALTER COLUMN修改,每张表只能有一个自增列 –2. 查看当前值:SELECT IDENT_CURRENT(‘TableName’), — 查看增量值:SELECT IDENT_INCR(‘TableName’) — 查看原始种子值:SELECT IDENT_SEED(‘Table...
·T-SQL中的查询基本结构:由SELECT子句(想要查看什么)、FROM子句(从哪查看)和WHERE子句(条件)组成; 1)Select语句 ·Select语法结构: SELECTselect_list [INTO new_table_name] FROMtable_name [WHEREsearch_conditions ] [GROUP BY group_by_expression] [HAVING search_conditions] ...
syntaxsql 複製 FROM { <table_source> [ , ...n ] } <table_source> ::= { [ database_name . [ schema_name ] . | schema_name . ] table_or_view_name [ AS ] table_or_view_alias [ <tablesample_clause> ] | derived_table [ AS ] table_alias [ ( column_alias [ , ...n ]...
AlterTableAlterColumnStatement 建構函式 屬性 方法 接受 AcceptChildren AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationStatement AlterTableConstraintModificationStatement AlterTableDropTableElement AlterTableDropTableElementStatement AlterTableFileTableName...
AlterTableAlterColumnStatement AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationStatement AlterTableConstraintModificationStatement AlterTableDropTableElement AlterTableDropTableElementStatement AlterTableFileTableNamespaceStatement AlterTableRebuildStatement AlterTabl...
SQL Server 2014 (12.x): schema changes are not supported. To change the definition of a memory-optimized table or natively compiled stored procedure, first drop the object and then recreate it with the desired definition. Operation TRUNCATE TABLE The TRUNCATE operation is not supported for ...