1. Make a note of all node names (and/or IP addresses), SQL Server virtual names along with preferred nodes. If there are more than three nodes you may need to also take note of possible owners for each SQL resource group. For my example assume that I have a cluster with node1 and...
These kinds ofSQL interview questionsconfuse the candidate at times. So, coming to the question, there are three different kinds of operators available in SQL. They are: Arithmetical operators Logical operators Comparison operators 4) Are the terms zero or blank space the same as that of NULL v...
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Intermediate PL/SQL Interview Questions Having covered the basic questions, now let's move on to some intermediate-level data structure interview questions. After testing your basic knowledge, interviewers are going to now test your technical proficiency in implementing and using PL/SQL concepts. 5. ...
3 More SQL Aggregate Function Interview Questions for Data Science- Jan 30, 2023. Lacking inspiration on how to prepare SQL aggregate functions for a job interview? Here are three interview question suggestions to get you out of a rut.
(Note: I created this test question based on a real SQL interview question that I heard from a friend, who applied at one of the biggest social media companies (name starts with ‘F.’ ;)) Solution of SQL Interview Question #1
“An instance with the same name is already installed on this computer. To proceed with SQL Server Setup, provide a unique instance name.” Solution: You can get this error if your previous uninstallation of SQLExpress doesn’t get uninstalled properly. You need to cleanup some registry keys...
Average Post Hiatus (Part 1) Facebook SQL Interview Question QuestionSolutionDiscussionSubmissions Given a table of Facebook posts, for each user who posted at least twice in 2021, write a query to find the number of days between each user’s first post of the year and last post of the ...
In solving this data analyst interview question, you’ll need to be fluent in using the following concepts: merge() lambda functions isna() unique() groupby() data aggregation Working with DataFrames Solution & Output Here’s how to solve this problem in Python. ...
WITH CTE (Col1, Col2, DuplicateCount)AS(SELECT Col1, Col2,ROW_NUMBER() OVER(PARTITION BY Col1, Col2 ORDER BY Col1) AS DuplicateCountFROM DuplicateRecordTable)DELETEFROM CTEWHERE DuplicateCount>1Day12 Why does a trigger fire multiple times in a single login?DBA question Multiple SQL ...