Bernd Buffen questions

Bernd Buffen answers

• Calculate overlap durations for time overlaps in MySQL
• MySQL many-to-many relation slow on big table
• Delete garbage parts of strings in MySQL
• Store SQL query results returned from the Server
• Use sql count multiple columns yes and no in Mysql
• mySQL: Return results from one column as multiple columns
• MySQL Join Query without duplicate values
• Show federated connections stored in MySQL database
• Bash variable under a mysql query
• mysql can't create table named ‘user’