diff options
Diffstat (limited to 'src/include/nodes/nodes.h')
| -rw-r--r-- | src/include/nodes/nodes.h | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/src/include/nodes/nodes.h b/src/include/nodes/nodes.h index 1cd2aee397c..bf1a6eee4f4 100644 --- a/src/include/nodes/nodes.h +++ b/src/include/nodes/nodes.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: nodes.h,v 1.86 2001/01/24 19:43:25 momjian Exp $ + * $Id: nodes.h,v 1.87 2001/03/22 04:00:51 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -172,7 +172,8 @@ typedef enum NodeTag T_RemoveAggrStmt, T_RemoveFuncStmt, T_RemoveOperStmt, - T_RemoveStmt_XXX, /* not used anymore; this tag# is available */ + T_RemoveStmt_XXX, /* not used anymore; this tag# is + * available */ T_RenameStmt, T_RuleStmt, T_NotifyStmt, @@ -225,11 +226,14 @@ typedef enum NodeTag T_RangeTblEntry, T_SortClause, T_GroupClause, - T_SubSelectXXX, /* not used anymore; this tag# is available */ - T_oldJoinExprXXX, /* not used anymore; this tag# is available */ + T_SubSelectXXX, /* not used anymore; this tag# is + * available */ + T_oldJoinExprXXX, /* not used anymore; this tag# is + * available */ T_CaseExpr, T_CaseWhen, - T_RowMarkXXX, /* not used anymore; this tag# is available */ + T_RowMarkXXX, /* not used anymore; this tag# is + * available */ T_FkConstraint, /*--------------------- @@ -347,19 +351,24 @@ typedef enum CmdType */ typedef enum JoinType { + /* * The canonical kinds of joins */ JOIN_INNER, /* matching tuple pairs only */ JOIN_LEFT, /* pairs + unmatched outer tuples */ - JOIN_FULL, /* pairs + unmatched outer + unmatched inner */ + JOIN_FULL, /* pairs + unmatched outer + unmatched + * inner */ JOIN_RIGHT, /* pairs + unmatched inner tuples */ + /* - * SQL92 considers UNION JOIN to be a kind of join, so list it here for - * parser convenience, even though it's not implemented like a join in - * the executor. (The planner must convert it to an Append plan.) + * SQL92 considers UNION JOIN to be a kind of join, so list it here + * for parser convenience, even though it's not implemented like a + * join in the executor. (The planner must convert it to an Append + * plan.) */ JOIN_UNION + /* * Eventually we will have some additional join types for efficient * support of queries like WHERE foo IN (SELECT bar FROM ...). |