I am reading the Momjian "Support Functions" section and have the
following comments:
1 - there is a comma after "BOTH" that is not before "LEADING" or
"TRAILING", so I believe it is an error.
trim(BOTH...) trim(BOTH, col) same as trim()
trim(LEADING...) trim(LEADING col) col with leading spaces
removed
trim(TRAILING...) trim(TRAILING col) col with trailing
spaces removed
2 - I typed \h trim and no help came up. Is it required to resort
to HTML documentation for docs on this function