Postgresql Can SQL CASE Return A Different Number Of Columns In
See Section 10 5 for more details If all your output columns have a compatible data type you could use an ARRAY to include a variable number of columns resulting in the same array type Like SELECT CASE x WHEN 1 THEN ARRAY y WHEN 2 THEN ARRAY x y z no ELSE defaults to NULL END AS my result array FROM tbl
How To Get Multiple Columns In A Single SQL CASE Statement , A CASE statement can return only single column not multiple columns You need two different CASE statements to do this select case when a policyno 2 in E W then c insuredcode else b insuredcode end as insuredcode case when a policyno 2 in E W then c insuredname else b insuredname end as insuredname from prpcmain a
Using Same CASE WHEN Conditions For Multiple Query Columns
Even in Oracle and in fact in the SQL standard CASE is an expression that returns a single value It is not used for control of flow like it is in some other languages Therefore it can t be used to conditionally decide among multiple columns or other operations
Return Multiple Rows From Matching On Multiple CASE Matches , SELECT Product Quantity Sold CASE WHEN Product IN Coca Cola Beer THEN Beverages CASE WHEN Product IN Pretzel Popcorn Candy Bar THEN Snacks CASE WHEN Product IN Cigarettes Beer THEN Controlled Substance END AS Category FROM sales table Would only return this output
PostgreSQL Documentation 16 9 18 Conditional Expressions
PostgreSQL Documentation 16 9 18 Conditional Expressions, The SQL CASE expression is a generic conditional expression similar to if else statements in other programming languages CASE WHEN condition THEN result WHEN ELSE result END CASE clauses can be used wherever an expression is valid Each condition is an expression that returns a boolean result
Solved PostgreSQL Function To Return Multiple Columns 9to5Answer
PostgreSQL CASE
PostgreSQL CASE The PostgreSQL CASE expression is the same as IF ELSE statement in other programming languages It allows you to add if else logic to the query to form a powerful query Since CASE is an expression you can use it in any places where an expression can be used e g SELECT WHERE GROUP BY and HAVING clause
PostgreSQL Case Statement Learn How To Use If In SQL PostgreSQL
PostgreSQL CASE Multiple Columns The CASE statement can be used when working with multiple columns to apply it to each column separately or to make new categories or flags based on the information from other columns Suppose we have a customers table with the following columns id first name last name country PostgreSQL CASE Multiple Columns DatabaseFAQs. CASE Statements in PostgreSQL In this tutorial you ll learn how to write conditional queries in PostgreSQL using the PostgreSQL CASE conditional expression Apr 2019 183 7 min read Conditional expressions are one of the most fundamental elements of any programming paradigm Common conditional expressions include if else blocks and switch cases SELECT tbs quot table name quot get features for tbs quot table name quot FROM information schema quot tables quot tbs WHERE tbs table schema public AND tbs table type BASE TABLE AND tbs quot table name quot LIKE analy ORDER BY tbs quot table name quot It works but the results are similar to the followings quot table name quot quot get features for quot
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