Hi! Nice feature. Few comments:
> + When a positive integer value is specified, <command>COPY</command> > limits > + the maximum tolerable number of errors while converting a column's > input > + value into its data type. If nothing is specified, then the maximum tolerable number of errors is one, right? Should we state this explicitly in the documentation? > +COPY x from stdin with (on_error ignore, reject_limit 0); How about a test where reject_limit is a string, but not (case-intensively) 'infinity'? > + CopyRejectLimits reject_limits; /* thresholds of reject_limit */ Why are there multiple thresholds? Can we have only one? Other places look good to me.