diff options
Diffstat (limited to 'src/include/parser/parse_node.h')
| -rw-r--r-- | src/include/parser/parse_node.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/include/parser/parse_node.h b/src/include/parser/parse_node.h index 0de44d166f4..994284019fb 100644 --- a/src/include/parser/parse_node.h +++ b/src/include/parser/parse_node.h @@ -295,6 +295,11 @@ struct ParseState * of SQL:2008 requires us to do it this way. We also use p_lateral_ok to * forbid LATERAL references to an UPDATE/DELETE target table. * + * While processing the RETURNING clause, special namespace items are added to + * refer to the OLD and NEW state of the result relation. These namespace + * items have p_returning_type set appropriately, for use when creating Vars. + * For convenience, this information is duplicated on each namespace column. + * * At no time should a namespace list contain two entries that conflict * according to the rules in checkNameSpaceConflicts; but note that those * are more complicated than "must have different alias names", so in practice @@ -312,6 +317,7 @@ struct ParseNamespaceItem bool p_cols_visible; /* Column names visible as unqualified refs? */ bool p_lateral_only; /* Is only visible to LATERAL expressions? */ bool p_lateral_ok; /* If so, does join type allow use? */ + VarReturningType p_returning_type; /* Is OLD/NEW for use in RETURNING? */ }; /* @@ -342,6 +348,7 @@ struct ParseNamespaceColumn Oid p_vartype; /* pg_type OID */ int32 p_vartypmod; /* type modifier value */ Oid p_varcollid; /* OID of collation, or InvalidOid */ + VarReturningType p_varreturningtype; /* for RETURNING OLD/NEW */ Index p_varnosyn; /* rangetable index of syntactic referent */ AttrNumber p_varattnosyn; /* attribute number of syntactic referent */ bool p_dontexpand; /* not included in star expansion */ |