diff options
Diffstat (limited to 'src/include/parser/parse_node.h')
| -rw-r--r-- | src/include/parser/parse_node.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/include/parser/parse_node.h b/src/include/parser/parse_node.h index d8fcd6ee907..bb0229abcd1 100644 --- a/src/include/parser/parse_node.h +++ b/src/include/parser/parse_node.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: parse_node.h,v 1.24 2001/01/24 19:43:27 momjian Exp $ + * $Id: parse_node.h,v 1.25 2001/02/14 21:35:05 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -18,6 +18,20 @@ /* * State information used during parse analysis + * + * p_rtable: list of RTEs that will become the rangetable of the query. + * Note that neither relname nor refname of these entries are necessarily + * unique; searching the rtable by name is a bad idea. + * + * p_joinlist: list of join items (RangeTblRef and JoinExpr nodes) that + * will become the fromlist of the query's top-level FromExpr node. + * + * p_namespace: list of join items that represents the current namespace + * for table and column lookup. This may be just a subset of the rtable + + * joinlist, and/or may contain entries that are not yet added to the main + * joinlist. Note that an RTE that is present in p_namespace, but does not + * have its inFromCl flag set, is accessible only with an explicit qualifier; + * lookups of unqualified column names should ignore it. */ typedef struct ParseState { @@ -25,6 +39,7 @@ typedef struct ParseState List *p_rtable; /* range table so far */ List *p_joinlist; /* join items so far (will become * FromExpr node's fromlist) */ + List *p_namespace; /* current lookup namespace (join items) */ int p_last_resno; /* last targetlist resno assigned */ List *p_forUpdate; /* FOR UPDATE clause, if any (see gram.y) */ bool p_hasAggs; @@ -42,6 +57,7 @@ extern Node *make_operand(char *opname, Node *tree, extern Var *make_var(ParseState *pstate, RangeTblEntry *rte, int attrno); extern ArrayRef *transformArraySubscripts(ParseState *pstate, Node *arrayBase, + Oid arrayType, List *indirection, bool forceSlice, Node *assignFrom); |