7+ Scalar Subquery Produced More Than One Element

Scalar subqueries are often used in the SELECT list or WHERE clause. Trying to select multiple columns will result in an.

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Scalar subquery produced more than one element What I want to do is count the number of different parameters and group them by date.

. There are a few. A scalar subquery must select a single column. If the scalar subquery returns more than one element the outer query will be executed multiple times once for each element in the subquerys result set.

A scalar subquery expression is a subquery that returns exactly one column value from one row. SELECT column2 FROM table2 WHERE column1 SELECT column2 FROM table2 LIMIT 1 This would return the same results as the original query but without the error. Find centralized trusted content and collaborate around the technologies you.

Scalar subquery produced more than one element. Working Example -- Using expression. Create free Team Collectives on Stack Overflow.

Find centralized trusted content and collaborate around the technologies you. If you want to deduplicate all of the. I have tried the query below and I get the error.

The value of the scalar subquery expression is the value of the select list item of the. Scalar subquery produced more than one element In the example code above this is ensured by enforcing one result via LIMIT 1. This preserves all of the SKUs through the use of ARRAY_CONCAT_AGG over an ARRAY subquery that extracts the SKUs for each row.

No Comments on Getting an error. This can lead to duplicate rows in. If I rewrite this to use a nested arrays everything works perfect.

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