In the standard version of both SQL Practice Problems and More SQL Practice Problems, most questions have numerous hints that you can use to move forward in solving the practice problem. They’re very useful if you’re completely stuck on a problem. However, based on numerous requests from re...
We could have the following 2 pairs of id that satisfy the requirements: As a result, the number 4 would appear twice. Consequently, DISTINCT is necessary. Question 2:Department Highest Salary Source: Leetcode The Employee table holds all employees. Every employee has an Id, a salary, and t...
I hope these SQL interview questions offer you a good picture of what to expect from an interview perspective. More exposure to the SQL environment is necessary to crack the SQL interview; this can be attained by studying SQL in-depth. In order to evaluate key SQL principles, you must also...
the tests offered by the platform were used by companies such as eBay, Indeed, NHS, and PayPal to hire their next right talent. Over the years, the relevance of the questions being asked in those tests attracted hundreds
In practice, however, performance issues are fairly easy to mitigate as long as the proper analysis is done and the appropriate hardware is selected. Considerations for performance are also included as part of other metrics such as density and resource management, because all applications should at...
Couple of questions on SQL Server 2008 - Beginner Covert sql output into excel and schedule the automate job that runs every friday and send email with attachment . Coverting UTC date time to local date time in sql server CR and LF not working in a SELECT statement create a job without sq...
Frequently Asked Questions About Indexed Views Q. Why are there restrictions on the kind of views I can create an index on? A. To make sure that it is logically possible to incrementally maintain the view, to restrict the ability to create a view that would be expensive to maintain, and ...
And there isn't really a generalized best practice I can give except to make sure you do put thought into them or you may run into performance problems. You can find more information about these settings in "CREATE EVENT SESSION (T-SQL)". Life of an Event Once the Extended Events ...
Debugging this query is easy, as shown in the following example.ExampleIf you want to query the file names.csv with the query in Query 1, Azure Synapse serverless SQL pool returns with a result that looks odd:In names.csv:csv Copy ...
Input: natural language questions, such as "Query the relevant information of the table t_user, and the results are sorted in descending order by id, and only the first 10 data are kept." Output: SQL, such as "SELECT * FROM t_user ORDER BY id DESC LIMIT 10" ...