Prints the value of each specified \fIcolumn\fR in the given
\fIrecord\fR in \fItable\fR. For map columns, a \fIkey\fR may
optionally be specified, in which case the value associated with
\fIkey\fR in the column is printed, instead of the entire map.
Prints the value of each specified \fIcolumn\fR in the given
\fIrecord\fR in \fItable\fR. For map columns, a \fIkey\fR may
optionally be specified, in which case the value associated with
\fIkey\fR in the column is printed, instead of the entire map.