hi.
{
/*
* For UPDATE/DELETE result relations, the attribute number of the row
* identity junk attribute in the source plan's output tuples
*/
AttrNumber ri_RowIdAttNo;
/* Projection to generate new tuple in an INSERT/UPDATE */
ProjectionInfo *ri_projectNew;
/* arrays of stored generated columns expr states, for INSERT and UPDATE */
ExprState **ri_GeneratedExprsI;
ExprState **ri_GeneratedExprsU;
}
for the struct ResultRelInfo, i've checked the above fields.
I think first ri_RowIdAttNo applies to MERGE also. so the comments may
not be correct?
Other files comments are fine.
see:
ExecInitModifyTable
/*
* For UPDATE/DELETE/MERGE, find the appropriate junk attr now, either
* a 'ctid' or 'wholerow' attribute depending on relkind. For foreign
* tables, the FDW might have created additional junk attr(s), but
* those are no concern of ours.
*/
if (operation == CMD_UPDATE || operation == CMD_DELETE ||
operation == CMD_MERGE)
