I was creating a script to create DB user in Postgres via psql CLI, the challanges I am facing is that value conversion from Any case to lower case is happeing or not able to find the solution for the same.
prompt 'Please input user name (must be lowercase): ' inputName set lowerVal lower(:inputName) --This is not working
As per my expectation the lowerVal variable should convert the inputValue into lower case value. Did the googles but didn’t got the solution for the same.
psql cannot to evaluate expressions, so your example cannot to work. You can use statement
gset, that evaluate query and stores a result to
postgres=# prompt 'Please input user name (must be lowercase): ' inputName Please input user name (must be lowercase): AHOJ postgres=# select lower(:'inputName') as "inputName" gset postgres=# echo :inputName ahoj
Probably is better to use only small chars for
psql variable names.
Another possibility is using shell expression evaluation with back apostrophes:
postgres=# set str AHOJ postgres=# set str `echo ":str" | tr "[:upper:]" "[:lower:]"` postgres=# echo :str ahoj
This example works on Unix like systems only.