Summary – Top 50 Tricky SQL Queries for Interview The SQL queries provided here should work on popular databases like MySQL, SQL Server, and Oracle with only minor adjustments. These queries use common SQL commands like SELECT, FROM, WHERE, and others that are widely supported. Still, here a...
INSERT,SELECT) and some concepts (primary key,foreign key) and theory (stored procedures,user-defined functions,views). Now it’s time to discuss some interesting SQL queries.
During the technical interview, we can face some query reading questions to understand our SQL query reading capabilities. For this reason, we need to make some SQL practice to improve our query reading skills. For example, the following question, which seems very simple but contains a bit of...
SQL is a language used to view or change data in databases. Get these online SQL Practice Questions and prepare for your next SQL examination.
SQL> select 2 to_char(sysdate,'hh24:mi:ss') As "SystemTime", 3 to_char(sysdate,'sssss') "Seconds" 4 from dual; SystemTime Seconds --- --- 11:34:50 41750 Video for Complex sql queries : Register for free and Get Complex SQL Interview Questions PDF : Submit FOR ...
SQL Courses We have talked a ton about the tests and quizzes and challenges and problems when you sit for your following SQL interview. But to do that, you should practice the queries and understand the underlying logic and algorithms behind those concepts. ...
w3resource — This is a great free resource for writing queries. The SQL Murder Mystery — This is another one of my favorites thanks to its fun, interactive environment that has you feeling like a top secret agent. Interview Query — This platform is dedicated to helping data scientists pra...
w3resource— another great free resource for writing queries. The SQL Murder Mystery— another one of my favourites thanks to it’s fun, interactive environment that has you feeling like a top secret agent. Interview Query— a platform dedicated to data scientists to practice their SQL. If you...
People interviewing for jobs where they will be asked to write Select queries Data scientists and data engineers who don’t yet have years of experience with SQL Anyone who wants to upgrade their SQL knowledge Anyone who needs to make sense of massive amounts of data, search for patterns and...
bandwidth you have to practice. If you’re actively interviewing, it's always a good idea to double down on interview questions and refresh some tricky concepts like window functions, subqueries, and common table expressions. Here is aSQL cheat sheetyou can bookmark for quick reference. Keep ...