The syntax to alias a column in SQL Server (Transact-SQL) is: column_name [ AS ] alias_name OR The syntax to alias a table in SQL Server (Transact-SQL) is: table_name [ AS ] alias_name Parameters or Arguments column_name The original name of the column that you wish to alias. t...
Look at an example of a subquery, which is a query that is nested in a SELECT, INSERT, UPDATE, or DELETE statement, or inside another subquery in SQL Server.
syntaxsql 复制 SELECT [ ALL | DISTINCT ] [ TOP ( expression ) [ PERCENT ] [ WITH TIES ] ] <select_list> <select_list> ::= { * | { table_name | view_name | table_alias }.* | { [ { table_name | view_name | table_alias }. ] { column_name | $IDENTITY | $ROWGUID ...
SyntaxSQL Server、Azure SQL 資料庫 和 Fabric SQL 資料庫的語法:syntaxsql 複製 [ FROM { <table_source> } [ , ...n ] ] <table_source> ::= { table_or_view_name [ FOR SYSTEM_TIME <system_time> ] [ [ AS ] table_alias ] [ <tablesample_clause> ] [ WITH ( < table_hint > [...
syntaxsql CREATEDATABASEdatabase_snapshot_nameON(NAME=logical_file_name,FILENAME='os_file_name') [ ,...n ]ASSNAPSHOTOF[;] 引數 database_name 這是新資料庫的名稱。 資料庫名稱在 SQL Server 的執行個體內必須是唯一的,且必須符合識別碼的規則。
syntaxsql複製 -- Syntax for SQL Server and Azure SQL Database[WITH<common_table_expression>[ ,...n ] ]DELETE[TOP( expression ) [PERCENT] ] [FROM] { {table_alias|<object>|rowset_function_limited[WITH(table_hint_limited[ ...n ] ) ] } | @table_variable} [<OUTPUT Clause>] [FROM...
*/ALTERTABLESales.CustomersDROPCOLUMNcompanyname 如果使用SCHEMABINDING选项,可以避免被引用对象或列的改变或删除导致的运行时错误,其实有点像外键约束一样。 注意,使用SCHEMABINDING选项时SELECT语句不能使用星号(*)查询,否则报错。Procedure USACusts. Syntax '*' is not allowed in schema-bound objects. SQL.sql ...
FROM table_name WHERE condition 1. 2. 3. 4. 5. SQL 撤销视图 您可以通过 DROP VIEW 命令来删除视图。 SQL DROP VIEW Syntax DROP VIEW view_name 1. 2. SQL Server Date 函数 下面的表格列出了 SQL Server 中最重要的内建日期函数: ...
適用於:SQL ServerAzure SQL 資料庫 Azure SQL 受控執行個體 將新的擴充屬性加入至資料庫物件。 Transact-SQL 語法慣例 語法 syntaxsql 複製 sp_addextendedproperty [ @name = ] N'name' [ , [ @value = ] value ] [ , [ @level0type = ] 'level0type' ] [ , [ @lev...
syntaxsql コピー -- Syntax for SQL Server and Azure SQL Database [ WITH <common_table_expression> [...n] ] UPDATE [ TOP ( expression ) [ PERCENT ] ] { { table_alias | <object> | rowset_function_limited [ WITH ( <Table_Hint_Limited> [ ...n ] ) ] } | @table_variable ...