Postgres Error: More than one row returned by a subquery used as an expression

Postgres Error: More than one row returned by a subquery used as an expression

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How to compare two query results for equality in MySQL?

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Update via subquery, what if the subquery returns no rows?

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Derby Select over subquery not working

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Structure of subqueries in mySQL for optimal performance

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How to use a subquery inside another subquery with three tables in mysql?

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Creating a Custom Aggregate Function for Access Queries

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spring-data subquery within a Specification

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