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Find the Top 10 Most Common Values in a Column
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SQL Problems
To find the top 10 most common values in a column, you can use the COUNT() function in SQL.
SQL Query to Find Common Records Between Two Tables
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SQL Problems
This technical problem deals with finding common records between two SQL tables. An example is given, along with the expected output.
Get id and value of row with highest value
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SQL Problems
To find the id and value of the row with the highest value in a table with two columns, id and value, write a query that will return the id and the value of the row with the highest value.
SQL Query to Find Top 10 Customers by Total Spend
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SQL Problems
This technical problem asks the reader to write a SQL query to find the top 10 customers by total spend. The table of customer data is provided as an example, and the expected output is also provided.
Multiplying Values in Two Tables
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SQL Problems
You are given two tables, Table A and Table B. Your task is to write a SQL query that returns the sum of the values in Table A, multiplied by the sum of the values in Table B.
Get unique values from a table column
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SQL Problems
This stored procedure will take in a table name and column name as input, and return all the unique values in that column as output.
Query XML Data in SQL
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SQL Problems
This technical problem deals with how to query XML data in SQL in order to return it in a tabular format.
Printing id, start, and end times from a table of data
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SQL Problems
This question asks for a cursor that will print the id, start, and end times for each row in a table. The input table has three columns: id, start, and end. The example output should print the id and start and end times for each row in the table, as shown in the example output.