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SELECT CASE WHEN ColB = 'March' THEN (Select ColA FROM tablename WHERE ColB = 'January') END FROM tablename Or can be done without a CASE would be. SELECT (SELECT colA FROM tablename WHERE colB = 'January') FROM tablename WHERE colB = 'March' See example of second running here
I have a variable called @status which I set before this select statement: Select. ordr_num as num, ordr_date as date, ordr_ship_with as shipwith. From. order. where ordr_num = @ordrNum. I only want to select ordr_ship_with column if @status <> 'Cancelled', otherwise I want to select null for shipwith.
28 maj 2024 · In this article, we explored different options for executing IF-THEN logic in a SQL SELECT statement. These options include using CASE , IIF() , and CHOOSE() . Furthermore, if we want a query that’s used in almost every dialect, we must choose the CASE statement.
4 sie 2024 · IF or IF-ELSE statements let us run code blocks based on certain conditions. We can use these statements to compare values, filter records, and manipulate data based on specific requirements. Sometimes, we need to use an IF statement as an expression in our SQL clauses like SELECT or WHERE to modify our output based on specific conditions.
16 sty 2024 · Basic Syntax: CASE WHEN THEN. CASE WHEN THEN ELSE. Multiple THENs in CASE WHEN. Examples of Using CASE WHEN in Data Analysis. Example 1: Categorizing Data. Example 2: Handling NULL Values. Example 3: Creating Aggregated Columns. Example 4: Marketing Analysis. Example 5: Customer Segmentation. Example 6: Categorizing Products by Price Range.
7 mar 2022 · In some cases, you might want to choose the output value based on column values directly in your SQL statement. In this article, we will explain how to use the CASE expression in SELECT SQL statements. We will also explain how to use an alternative approach with an IF clause for MySQL.
30 paź 2023 · This query utilizes the WHERE clause with AND/OR operators as an SQL if statement in SELECT to combine multiple conditions, allowing the retrieval of specific records based on complex conditional logic. SELECT * FROM Employees WHERE Age < 35 OR (Age >= 35 AND Department = 'IT');
