3 COPY "t"("x", "y") FROM 'xxx'
4 COPY "t" FROM 'xxx' BINARY
5 COPY "t" FROM 'xxx' OIDS
6 COPY "t" FROM 'xxx' DELIMITERS ','
7 COPY "t" FROM 'xxx' NULL 'x'
10 COPY "t"("x", "y") TO 'yyy'
11 COPY "t" TO 'yyy' BINARY
12 COPY "t" TO 'yyy' OIDS
13 COPY "t" TO 'yyy' DELIMITERS ','
14 COPY "t" TO 'yyy' NULL 'x'
15 COPY ( SELECT "*" FROM "t") TO 'xxx'