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select conditionally with conditional joins in mysql

I am trying to join two tables, people and sales, and displaying results based on a where condition which should be used to join the tables. My current attempt is showing only one result but I want all the rows in the people to be shown regardless of whether they have a record in the sales table, if they have

Remove zero amount in a query

I have a table finalData with the following columns and data I am creating mysql query to display the income and expenses of Singapore per Area, but I have to exclude areas that has zero amount. Here’s the code I tried: Output should be like this Any help would be appreciated. Thanks Answer This logic would be simpler phrased with

SQL: Retrieve missing values from superset

I have a table like this: I want to return a table with all the ratings possible. In this case 1 to 5. So my resulting table will be: I have tried using something like: but this does not work. Can you please suggest a solution for this? Answer You can cross join the list of distinct devices with numbers

How to fetch all data without the “out of range” SQL Exception?

I’m extracting data from a database, and I’m getting com.microsoft.sqlserver.jdbc.SQLServerException: The index 15 is out of range. during RunTime. My connection class is executed as the following: While I understand why it’s happening, in this while loop: I don’t quite understand how to fetch the data without it, since there are 14 fields, and an arbitrary number of rows in

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