!2676 支持or表达式的谓词提取下推

Merge pull request !2676 from 陈志凯/master

src/include/optimizer/clauses.h

@@ -20,6 +20,8 @@
 #include "nodes/nodeFuncs.h"
 
 #ifndef ENABLE_MULTIPLE_NODES
+#define is_andclause(clause) \
+    ((clause) != NULL && IsA(clause, BoolExpr) && (((const BoolExpr *)(clause))->boolop) == AND_EXPR)
 #define is_orclause(clause) \
     ((clause) != NULL && IsA(clause, BoolExpr) && (((const BoolExpr *)(clause))->boolop) == OR_EXPR)
 #define is_notclause(clause) \

src/include/optimizer/orclauses.h

@@ -0,0 +1,21 @@
+/*-------------------------------------------------------------------------
+ *
+ * orclauses.h
+ *	  prototypes for orclauses.c.
+ *
+ * Portions Copyright (c) 2022, openGauss Contributors
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/optimizer/orclauses.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef ORCLAUSES_H
+#define ORCLAUSES_H
+
+#include "nodes/relation.h"
+
+extern void extract_restriction_or_clauses(PlannerInfo *root);
+
+#endif /* ORCLAUSES_H */

src/include/optimizer/paths.h

@@ -79,13 +79,6 @@ inline bool CheckIndexPathUseGPI(IndexPath* ipath)
     return ipath->indexinfo->isGlobal;
 }
 
-
-/*
- * orindxpath.c
- *	  additional routines for indexable OR clauses
- */
-extern bool create_or_index_quals(PlannerInfo* root, RelOptInfo* rel);
-
 /*
  * tidpath.h
  *	  routines to generate tid paths

src/include/utils/guc.h

@@ -418,7 +418,8 @@ typedef enum {
     PLPGSQL_STREAM_FETCHALL = 4096, /* fetch all tuple when has stream sql under plpgsql's for-loop */
     PREDPUSH_SAME_LEVEL = 8192, /* predpush same level */
     PARTITION_FDW_ON = 16384, /* support create foreign table on partitioned table */
-    DISABLE_BITMAP_COST_WITH_LOSSY_PAGES = 32768 /* stop computing bitmap path cost with lossy pages */ 
+    DISABLE_BITMAP_COST_WITH_LOSSY_PAGES = 32768, /* stop computing bitmap path cost with lossy pages */
+    EXTRACT_PUSHDOWN_OR_CLAUSE = 65536  /* Extract restriction OR clauses. */
 } sql_beta_param;
 
 typedef enum {