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17 lis 2015 · I am running a SELECT on two tables. I'll simplify it to the part where I'm having trouble. I need to modify the SELECT results to a certain format for a data import. My CASE statement works fine until I get to the point that I need to base the WHEN ... THEN... on a different table column.
15 wrz 2008 · See working demo: if then without case in SQL Server. For start, you need to work out the value of true and false for selected conditions. Here comes two NULLIF: for true: ISNULL(NULLIF(p.[Instock], 'Y'), 1) for false: ISNULL(NULLIF(p.[Instock], 'N'), 0) combined together gives 1 or 0. Next use bitwise operators. It's the most WYSIWYG method.
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.
19 cze 2017 · I'd suggest using dynamic sql with dictionary of table names and a query to evaluate a specific condition. You can do that with selecting count of records that satisfy the condition needed to select from the table you want.
9 cze 2024 · In this article, we’ve explored the powerful SQL techniques of joining and using subqueries to retrieve complex and informative data from multiple tables. Additionally, we’ve demonstrated various types of joins, including INNER , LEFT , RIGHT , and FULL JOIN , with practical examples to illustrate their distinct use cases .
30 paź 2023 · Different methods to use SQL IF Statement in SELECT. CASE Statement: The CASE statement directly introduces conditional logic (if-else) into SELECT statements, allowing different values to be returned based on evaluated conditions.
21 kwi 2021 · Querying Multiple Tables in SQL: Method 1: The most common way to query multiple tables is with a simple SELECT expression. To integrate results from different tables, use the FROM clause to name more than one table. Here’s how it works in practice:
