case WHEN cast(`status` AS SIGNED) < 45 THEN '1' WHEN cast(`status` AS SIGNED) > 44 AND...
SQL CASE statement with multiple conditions In case you need the result to satisfy multiple conditions, you can add those conditions to the T-SQL CASE statement and combine them with the AND operator: CASE expression WHEN condition1 AND condition2 THEN result1 ELSE result2 END ...
With the searched CASE expression, we can have multiple WHEN conditions: SELECT [BusinessEntityID],[JobTitle],[HireDate],Seniority=CASE WHENDATEDIFF(YEAR,[HireDate],GETDATE())>10 THEN'Longer than 10 years'WHENDATEDIFF(YEAR,[HireDate],GETDATE())=10 THEN'Exactly 10 years'WHENDATEDIFF(YEAR,[...
你可以使用string_split为了达到这个目的。
–简单Case函数 CASE sex WHEN ‘1’ THEN ‘男’ WHEN ‘2’ THEN ‘女’ ELSE ‘其他’ END ...
在下列螢幕擷取畫面中,緩衝區資料頁面與分頁可用空間 (PFS) 頁面上皆發生等候。 如需 PFS 頁面閂鎖競爭的詳細資訊,請參閱下列 SQLSkills 的協力廠商部落格文章:Benchmarking:Multiple data files on SSDs (效能評定:SSD 上的多重資料檔案。)。 即使已增加資料檔案的數目,緩衝區資料頁上同樣很容易發生閂鎖競爭。
Evaluates a list of conditions and returns one of multiple possible result expressions. The CASE expression has two formats: The simple CASE expression compares an expression to a set of simple expressions to determine the result. The searched CASE expression evaluates a set of Boolean expressions ...
CREATE PROCEDURE dbo.uspMultipleResults AS SELECT TOP(10) BusinessEntityID, Lastname, FirstName FROM Person.Person; SELECT TOP(10) CustomerID, AccountNumber FROM Sales.Customer; GO C. 建立 CLR 預存程序下列範例會建立 GetPhotoFromDB 程序,以參考 HandlingLOBUsingCLR 組件中 LargeObjectBinary 類別的...
Bulk update (BU) locks allow multiple threads to bulk load data concurrently into the same table while preventing other processes that are not bulk loading data from accessing the table. The Database Engine uses bulk update (BU) locks when both of the following conditions are true. You use ...
Changing Connection string in multiple packages. Changing Data type of Excel Destination in SSIS Changing ForEach Loop Container Directory Property Changing Server name in SSIS Character Limit - Export Data from SQL Server to Excel 12.0 CHARINDEX and case sensitive Check for file existence in ssis an...