Sql Tips——Update语句也使用表别名(Table Alias) 在编写Sql脚本时通过表别名可以大大缩减Sql代码,同时表别名也是解决同表多次引用的手段之一。在select中使用表别名大家应该都很熟悉了: 1 select * from TableA as A inner join TableB as B on A.Key1 = B.Key1 但是在Update中使用表别名可能就没那么多...
SQL 复制 USE tempdb; GO DECLARE @x TABLE (ID INT, Value INT); DECLARE @y TABLE (ID INT, Value INT); INSERT @x VALUES (1, 10), (2, 20); INSERT @y VALUES (1, 100),(2, 200); WITH cte AS (SELECT * FROM @x) UPDATE cte -- cte isn't referenced by the alias. SET ...
在SQL Server 中更改表或视图中的现有数据。 有关示例,请参阅示例。 Transact-SQL 语法约定 语法 syntaxsql 复制 -- Syntax for SQL Server and Azure SQL Database [ WITH <common_table_expression> [...n] ] UPDATE [ TOP ( expression ) [ PERCENT ] ] { { table_alias | | rowset_function...
UPDATE[%keyword]table-ref[[AS]t-alias]value-assignment-statement[FROM[optimize-option]select-table[[AS]t-alias]{,select-table2[[AS]t-alias]}][WHEREcondition-expression]UPDATE[%keyword]table-ref[[AS]t-alias]value-assignment-statement[WHERECURRENTOFcursor]value-assignment-statement::=SETcolumn1=s...
[ WITH [ RECURSIVE ] with_query [, ...] ] UPDATE [ ONLY ] table_name [ * ] [ [ AS ] alias ] SET { column_name = { expression | DEFAULT } | ( column_name [, ...] ) = [ ROW ] ( { expression | DEFAULT } [, ...] ) | ( column_name [, ...] ) = ( sub-SELEC...
Syntax (with table alias) UPDATE A SET A.<column_name> = B.<column_name>, ... FROM A [ INNER | LEFT ] JOIN B ON <join_predicate> [ WHERE Condition(s) ] SQL Copy Note. Table alias can be used instead of the table_name in the UPDATE JOIN syntax. Examples The examples ...
SQL Server 2008 R2 のテーブルまたはビューの 1 つ以上の列にある既存のデータを変更します。例については、「使用例」を参照してください。 Transact-SQL 構文表記規則 構文 [ WITH <common_table_expression> [...n] ] UPDATE [ TOP ( expression ) [ PERCENT ] ] { { table_alias | ...
-- Syntax for SQL Server and Azure SQL Database [ WITH <common_table_expression> [...n] ] UPDATE [ TOP ( expression ) [ PERCENT ] ] { { table_alias | | rowset_function_limited [ WITH ( <Table_Hint_Limited> [ ...n ] ) ] } | @table_variable } SET { column_name = {...
The rows referenced in the TOP expression used with INSERT, UPDATE, or DELETE aren't arranged in any order. Parentheses delimiting expression in TOP are required in INSERT, UPDATE, and DELETE statements. For more information, see TOP (Transact-SQL). table_alias The alias specified in the UPDA...
UPDATE (Transact-SQL) WHERE (Transact-SQL) WITH common_table_expression (Transact-SQL) 数据类型 (Transact-SQL) EXECUTE 表达式(Transact-SQL) 语言元素 (Transact-SQL) 管理命令 运算符 (Transact-SQL) 谓词(Transact-SQL) PRINT (Transact-SQL)