If I need to look up multiple times, I should just record it in my own cheatsheet.
BEGIN TRANSACTION
sql-request
ROLLBACK TRANSACTION OR COMMIT TRANSACTION
Allows you to see what would be changed with ROLLBACK or make the change and know what was changed with COMMIT
! is written as NOT
coalesce(variable, false) checks if the variable is null or false
All variables with capital letters need quotes around them
Migrations are sorted by timestamp. New migrations should have the largest timestamp in the name.
LIKE is equivalent to = unless wildcards are used WHERE column_name LIKE '%input%'
EXPLAIN lists who what processes were run and costs - If it's in the 4 digits it's not too bad. Seq Scan are painful and solved through indexing columns.
Count the number of rows in a table
PGSL
\d describe all tables
\q quit
SELECT COUNT(*)
FROM my_table
Comments are prefixed with --