INSERT ... UPDATE syntax (syntax only)

sql_yacc.yy and sql_parse.cc cleanup


sql/lex.h:
  INSERT ... UPDATE syntax
sql/sql_parse.cc:
  merged SQLCOM_REPLACE and SQLCOM_INSERT the same way their _SELECT counterparts were merged long time ago - just to remove duplicate code and be consistent :)
  now nobody needs SQLCOM_REPLACE* at all :))
sql/sql_yacc.yy:
  INSERT ... UPDATE syntax
  cleanup

sql/lex.h

@@ -135,6 +135,7 @@ static SYMBOL symbols[] = {
   { "DROP",		SYM(DROP),0,0},
   { "DUMPFILE",		SYM(DUMPFILE),0,0},
   { "DYNAMIC",		SYM(DYNAMIC_SYM),0,0},
+  { "DUPLICATE",	SYM(DUPLICATE),0,0},
   { "ERRORS",		SYM(ERRORS),0,0},
   { "END",		SYM(END),0,0},
   { "ELSE",             SYM(ELSE),0,0},

sql/sql_parse.cc

@@ -1961,25 +1961,19 @@ mysql_execute_command(THD *thd)
       close_thread_tables(thd);
     }
     break;
+  case SQLCOM_REPLACE:
   case SQLCOM_INSERT:
-    if (check_access(thd,INSERT_ACL,tables->db,&tables->grant.privilege))
+  {
+    ulong privilege= (lex->duplicates == DUP_REPLACE ?
+                      INSERT_ACL | DELETE_ACL : INSERT_ACL);
+    if (check_access(thd,privilege,tables->db,&tables->grant.privilege))
       goto error; /* purecov: inspected */
-    if (grant_option && check_grant(thd,INSERT_ACL,tables))
+    if (grant_option && check_grant(thd,privilege,tables))
       goto error;
     res = mysql_insert(thd,tables,lex->field_list,lex->many_values,
 		       lex->duplicates);
     break;
-  case SQLCOM_REPLACE:
-    if (check_access(thd,INSERT_ACL | DELETE_ACL,
-		     tables->db,&tables->grant.privilege))
-      goto error; /* purecov: inspected */
-    if (grant_option && check_grant(thd,INSERT_ACL | DELETE_ACL,
-				    tables))
-
-      goto error;
-    res = mysql_insert(thd,tables,lex->field_list,lex->many_values,
-		       DUP_REPLACE);
-    break;
+  }
   case SQLCOM_REPLACE_SELECT:
   case SQLCOM_INSERT_SELECT:
   {
@@ -1989,8 +1983,8 @@ mysql_execute_command(THD *thd)
       select privileges for the rest
     */
     {
-      ulong privilege= (lex->sql_command == SQLCOM_INSERT_SELECT ?
-			INSERT_ACL : INSERT_ACL | DELETE_ACL);
+      ulong privilege= (lex->duplicates == DUP_REPLACE ?
+                        INSERT_ACL | DELETE_ACL : INSERT_ACL);
       TABLE_LIST *save_next=tables->next;
       tables->next=0;
       if (check_access(thd, privilege,