Mureinik questions

Mureinik answers

• SQL : select record from table 1 which are not in table 2
• UnsupportedOperationException while iterating over CopyOnWriteArrayList
• Git - programatically prevent ability to commit or push
• Clone another branch after cloning single-branch
• How to duplicate directory in git, tracking new files?
• sum by increment postgres
• how to sum positive (+) and negative (-) number in excel
• mysql where date is before now + 2 weeks
• What are the advantages of include table name in index name?
• Postgres: Order by Non Zeros ASC followed by Zeros and then NULLS LAST