Fahmi questions

Fahmi answers

• How to merge multiple rows into one row with filtering rules in SQL Server
• How to get the Count of a column which has different values in it
• Join table and pick rows where for given id exists only one value
• MySQL extract gender as a string when it stored in the table as a Boolean
• How to find missing sequence number which is minimum
• SQL Query How To Get Time Difference Beetwen Two Results
• SQL Group By function combined with SUM
• Rows matched: 1 Changed: 0 Warnings: 0 Mysql update not happening
• SQL error 42803: I shouldn't be getting this error, what's going on?
• select rows where not in multiple columns mysql