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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.
23 sie 2024 · This is your comprehensive guide to multiple case when in SQL. Discover tips and strategies to effectively apply this conditional logic in your queries.
It’s particularly useful when we need to categorize or transform data based on multiple conditions. In this article, we’ll explore how to use the CASE statement with multiple conditions, providing simple examples that should work across most major relational database management systems (RDBMS s).
20 paź 2017 · SELECT COALESCE(B.column1, C.column1, D.column1, -- omitted other columns A.column1) -- (case A.column1 -- when '1' then B.value -- when '2' then C.value -- when '3' then D.value -- -- omitted other columns -- else A.column1 end) FROM A LEFT JOIN B ON B.clientId=100 and B.Id = '1' LEFT JOIN C ON C.clientId=100 and C.Id = '2' LEFT JOIN D ON D ...
16 sty 2024 · What happens if we have more than one condition we want to apply to our data? The following example shows how to use the CASE WHEN statement's syntax with multiple conditions. This offers a method for classifying data according to different standards:
2 cze 2023 · The SQL CASE statements lets you implement conditional logic directly in SQL. Learn all about the SQL CASE statement (plus examples) in this guide.
To display a value based on your specific condition(s), you need to write a CASE statement. The syntax is: CASE WHEN <condition_1> THEN <value_1> WHEN <condition_2> THEN <value_2> … ELSE <value_n> END AS <column_name> If condition_1 is met, then the retrieved value is value_1. If not, then the database checks for condition_2.
