sticky bit questions

sticky bit answers

• why $_ doesn't change between single and global replace
• Adding checks in postgres table where data is already incorrect
• How to change the name of a key in a JSON object stored in Postgres for all records
• List to be ordered from most to least; the creator who created the most family films will be at the top of the list
• Multiple left joins show distinct result with last date
• Before insert trigger to replace new data postgres
• Npgsql.PostgresException: '42P01: relation "table" does not exist'
• SQL Case When statement to count rows on multiple tables
• Don't want negative result of subtraction in MySQL
• get hahes key to string in perl