words=> COPY words_reviews (uid, author, nice, review, updated) FROM stdin WITH FORMAT 'csv';
ERROR: syntax error at or near "FORMAT"
LINE 1: ...d, author, nice, review, updated) FROM stdin WITH FORMAT 'cs...
[ [ WITH ] ( option [, ...] ) ]
The above means the entire "WITH" section is optional, as is the word WITH. However, if you want to add "with" options they must appear within parentheses, those are not optional. Multiple options can appear within the single set of parentheses.
"""
FORMAT
Selects the data format to be read or written: text, csv (Comma Separated Values), or binary. The default is text.
"""
Valid values for format are as listed, no single quote required (not sure about if they are allowed)