由於SQL Server 查詢最佳化工具通常會選擇最好的查詢執行計畫,因此,建議資深開發人員與資料庫管理員只在必要情況使用提示。 適用於: DELETE INSERT SELECT UPDATE MERGE Transact-SQL 語法慣例 語法 syntaxsql複製 <query_hint>::={ {HASH|ORDER}GROUP| {CONCAT|HASH|MERGE}UNION| {LOOP|MERGE|HASH}JOIN|DISABLE_...
WHILEboolean_expression{sql_statement|statement_block|BREAK|CONTINUE} Azure Synapse Analytics 和分析平台系统的语法(PDW)。 syntaxsql WHILEboolean_expression{sql_statement|statement_block|BREAK} 参数 boolean_expression 返回TRUE或FALSE. 如果布尔表达式包含语句SELECT,则必须将SELECT语句括在括号中。
Transact-SQL 語法慣例SyntaxSQL Server、Azure SQL 資料庫 和 Azure SQL 受控執行個體 的語法。syntaxsql 複製 ALTER INDEX { index_name | ALL } ON { REBUILD { [ PARTITION = ALL [ WITH ( <rebuild_index_option> [ , ...n ] ) ] ] | [ PARTITION = partition_number [ WITH ( <single_...
--Prepare the example by creating a table with a clustered columnstore index. CREATE TABLE SimpleTable ( ProductKey [int] NOT NULL, OrderDateKey [int] NOT NULL, DueDateKey [int] NOT NULL, ShipDateKey [int] NOT NULL ); CREATE CLUSTERED INDEX cci_SimpleTable ON SimpleTable (ProductKey);...
To set different types of data compression for different partitions, specify the DATA_COMPRESSION option more than once, for example: SQL Copy REBUILD WITH ( DATA_COMPRESSION = NONE ON PARTITIONS (1), DATA_COMPRESSION = ROW ON PARTITIONS (2, 4, 6 TO 8), DATA_COMPRESSION = PAGE ON PARTI...
Applies to: SQL Server 2017 (14.x) and later versions, and Azure SQL Database 'DISABLE_OPTIMIZED_NESTED_LOOP' Instructs the query processor not to use a sort operation (batch sort) for optimized nested loop joins when generating a q...
Transact-SQL syntax conventions Syntax syntaxsqlCopy <query_hint>::={ {HASH|ORDER}GROUP| {CONCAT|HASH|MERGE}UNION| {LOOP|MERGE|HASH}JOIN|DISABLE_OPTIMIZED_PLAN_FORCING|EXPANDVIEWS|FAST<integer_value>|FORCEORDER| {FORCE|DISABLE}EX...
Can we use While loop in CTE? can we write DDL command in Stored Procedure? Can wildcards be used on datetime column? can you add colour to a fields output in T-SQL? Can you change the value of yes or no instead of true or false use data type (BIT) ? Can you have a TRY CATC...
Applies to: SQL Server 2017 (14.x) and later versions, and Azure SQL Database 'DISABLE_OPTIMIZED_NESTED_LOOP' Instructs the query processor not to use a sort operation (batch sort) for optimized nested loop joins when generating a query plan. This hint name is equivalent to Trace Flag ...
The following example uses a user-defined function CreateNewPoint() to create a new value of user-defined type Point and insert the value into the Cities table. SQL Копирај INSERT INTO Cities (Location) VALUES ( dbo.CreateNewPoint(x, y) ); ...