diff options
Diffstat (limited to 'src/include/nodes/parsenodes.h')
| -rw-r--r-- | src/include/nodes/parsenodes.h | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index 09cb4ff5031..179d7a765db 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.347 2007/04/26 16:13:14 neilc Exp $ + * $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.348 2007/04/27 22:05:49 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -82,9 +82,11 @@ typedef uint32 AclMode; /* a bitmask of privilege bits */ * * Utility statements (i.e. non-optimizable statements) have the * utilityStmt field set, and the Query itself is mostly dummy. + * DECLARE CURSOR is a special case: it is represented like a SELECT, + * but the original DeclareCursorStmt is stored in utilityStmt. * * Planning converts a Query tree into a Plan tree headed by a PlannedStmt - * noded --- the Query structure is not used by the executor. + * node --- the Query structure is not used by the executor. */ typedef struct Query { @@ -96,13 +98,13 @@ typedef struct Query bool canSetTag; /* do I set the command result tag? */ - Node *utilityStmt; /* non-null if this is a non-optimizable - * statement */ + Node *utilityStmt; /* non-null if this is DECLARE CURSOR or a + * non-optimizable statement */ int resultRelation; /* rtable index of target relation for * INSERT/UPDATE/DELETE; 0 for SELECT */ - IntoClause *into; /* target for SELECT INTO / CREATE TABLE AS */ + IntoClause *intoClause; /* target for SELECT INTO / CREATE TABLE AS */ bool hasAggs; /* has aggregates in tlist or havingQual */ bool hasSubLinks; /* has subquery SubLink */ @@ -732,7 +734,7 @@ typedef struct SelectStmt */ List *distinctClause; /* NULL, list of DISTINCT ON exprs, or * lcons(NIL,NIL) for all (SELECT DISTINCT) */ - IntoClause *into; /* target for SELECT INTO / CREATE TABLE AS */ + IntoClause *intoClause; /* target for SELECT INTO / CREATE TABLE AS */ List *targetList; /* the target list (of ResTarget) */ List *fromClause; /* the FROM clause */ Node *whereClause; /* WHERE qualification */ @@ -1427,6 +1429,10 @@ typedef struct CommentStmt /* ---------------------- * Declare Cursor Statement + * + * Note: the "query" field of DeclareCursorStmt is only used in the raw grammar + * output. After parse analysis it's set to null, and the Query points to the + * DeclareCursorStmt, not vice versa. * ---------------------- */ #define CURSOR_OPT_BINARY 0x0001 /* BINARY */ @@ -1441,7 +1447,7 @@ typedef struct DeclareCursorStmt NodeTag type; char *portalname; /* name of the portal (cursor) */ int options; /* bitmask of options (see above) */ - Node *query; /* the SELECT query */ + Node *query; /* the raw SELECT query */ } DeclareCursorStmt; /* ---------------------- |