Top 50 Subqueries Interview Questions
The most frequently asked Subqueries questions across all roles and companies, ranked by real interview frequency. Updated daily.
Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
eClinicalWorksNNeenOpal Canada
InformaticaFind the second highest salary in each department without using aggregate functions.
Credit Genie
Cisco Restaurant + Bar
DevoteamFind the second-highest distinct transaction amount using a subquery in PostgreSQL without LIMIT.
Capgemini FSSBU
Freecharge
NPCICompute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.
Gain Digital
TCS
Zest AIFind the second highest distinct employee salary from a single table, returning NULL if it does not exist.
Best Buy
Amtex Systems
C3 AIFilter Revature assessment records to find candidates who passed SQL Fundamentals, then sort the matching rows by candidate name.
Incedo
CloudFactory
RevatureIdentify which columns act as primary keys and which act as foreign keys in a simple Airtel schema.
Microsoft
State of Wisconsin
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Use a CTE, join, and dense ranking to return each client's second-highest distinct transaction amount.
The Ameriprise
Tata Consultancy Services (North America)
Wells Fargo