Оператор Select…Case - Visual Basic | Microsoft Docs
Каждая вложенная конструкция Select Case должна иметь совпадающую End Select инструкцию и должна полностью содержаться в пределах одного блока инструкций Case или Case Else внешнего Select Case, внутри которого она...
SQL Server - Dealing with NULL values when sorting
When working with NULL values, it’s important how you deal with NULL records in your database. This example walks through and explains how to sort
SQL CASE - 1Keydata SQL 語法教學
SELECT Store_Name, CASE Store_Name WHEN 'Los Angeles' THEN Sales * 2 WHEN 'San Diego' THEN Sales * 1.5 ELSE Sales END "New Sales", Txn_Date FROM Store_Information
sql server - What does Then 1 else 0 mean in a CASE expression...
On earlier versions: SELECT COUNT(CASE WHEN column1 = 'value1' THEN 'truish' END). (You don't need the ELSE here because, unlike SUM, COUNT ignores NULL.). And I updated the value 1 to be a string to demonstrate that this has nothing to do with boolean.
SQL Select case when then else
Very often you want to perform IF statement in SELECT and replace one value with another. In SQL we cannot use IF in SELECT clause however we can achieve the same result using CASE WHEN THEN ELSE. In the below example I will use a very simple example where I will divide 7 days into 3 parts...
SQL CASE WHEN condition THEN NumericColumn ELSE 0 END
SELECT (CASE WHEN TableName.LogicCondition > 0 THEN TableName.NumericColumn ELSE 0 END) AS FilteredValue1, (CASE WHEN
SQL Case with multiple values - Stack Overflow
In Oracle, assuming statuid is never <= 0: SELECT Name, CASE WHEN statusid < 4 THEN 'Alive'. WHEN statusid = 4 THEN 'Dying'. ELSE 'Dead' END AS some_alias FROM people. You can also use DECODE.
Select random sample of data using 'Select Cases' in SPSS - YouTube
How to select a random sample of data from a data file in SPSS using the 'Select Cases' tool. ASK SPSS Tutorial Series.
SQL COALESCE Function: Handling NULL Values Effectively
SELECT * FROM products; Using SQL COALESCE for substituting NULL values. When working with the data in the database table, you often use the COALESCE function to substitute a default value for a NULL value.
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