Merge 10.3 into 10.4

storage/connect/mysql-test/connect/r/odbc_postgresql.result

@@ -319,3 +319,12 @@ SELECT * from pg_in_maria;
 my space column
 My value
 DROP TABLE pg_in_maria;
+#
+# MDEV-29397 UPDATE with WHERE on part of two-part primary key causes
+# info to turn into error.
+#
+CREATE TABLE t1 (a VARCHAR(6), b VARCHAR(6), PRIMARY KEY(a, b)) ENGINE=CONNECT TABNAME='schema1.t3' CHARSET=utf8 DATA_CHARSET=utf8 TABLE_TYPE=ODBC CONNECTION='DSN=ConnectEnginePostgresql;UID=mtr;PWD=mtr';
+UPDATE t1 SET a='10' WHERE a='20';
+Warnings:
+Note	1105	schema1.t3: 0 affected rows
+DROP TABLE t1;

storage/connect/mysql-test/connect/t/odbc_postgresql.test

@@ -223,3 +223,12 @@ DROP TABLE t1;
 CREATE TABLE pg_in_maria ENGINE=CONNECT TABNAME='schema1.space_in_column_name' CHARSET=utf8 DATA_CHARSET=utf8 TABLE_TYPE=ODBC CONNECTION='DSN=ConnectEnginePostgresql;UID=mtr;PWD=mtr' quoted=1;
 SELECT * from pg_in_maria;
 DROP TABLE pg_in_maria;
+
+--echo #
+--echo # MDEV-29397 UPDATE with WHERE on part of two-part primary key causes
+--echo # info to turn into error.
+--echo #
+CREATE TABLE t1 (a VARCHAR(6), b VARCHAR(6), PRIMARY KEY(a, b)) ENGINE=CONNECT TABNAME='schema1.t3' CHARSET=utf8 DATA_CHARSET=utf8 TABLE_TYPE=ODBC CONNECTION='DSN=ConnectEnginePostgresql;UID=mtr;PWD=mtr';
+UPDATE t1 SET a='10' WHERE a='20';
+DROP TABLE t1;
+

storage/connect/odbconn.cpp

@@ -2582,7 +2582,7 @@ int ODBConn::Rewind(char *sql, ODBCCOL *tocols)
   int rc, rbuf = -1;
 
   if (!m_hstmt)
-    rbuf = -1;
+    rbuf = 0;
   else if (m_Full)
     rbuf = m_Rows;           // No need to "rewind"
   else if (m_Scrollable) {

storage/connect/tabext.cpp

@@ -472,7 +472,7 @@ bool TDBEXT::MakeSQL(PGLOBAL g, bool cnt)
 			my_len= res - buf + 1;
 			my_schema_table= (char *) malloc(my_len);
 			memcpy(my_schema_table, buf, my_len - 1);
-			my_schema_table[my_len] = 0;
+			my_schema_table[my_len - 1] = 0;
 			Query->Append(Quote);
 			Query->Append(my_schema_table);
 			Query->Append(Quote);
@@ -480,7 +480,7 @@ bool TDBEXT::MakeSQL(PGLOBAL g, bool cnt)
 			Query->Append(".");
 			// Parse table
 			my_len= strlen(buf) - my_len + 1;
-			my_schema_table= (char *) malloc(my_len);
+			my_schema_table= (char *) malloc(my_len + 1);
 			memcpy(my_schema_table, ++res, my_len);
 			my_schema_table[my_len] = 0;
 			Query->Append(Quote);

storage/innobase/btr/btr0btr.cc

@@ -614,7 +614,7 @@ btr_get_size(
 
 	ut_ad(srv_read_only_mode
 	      || mtr_memo_contains(mtr, dict_index_get_lock(index),
-				   MTR_MEMO_S_LOCK));
+				   MTR_MEMO_SX_LOCK));
 
 	if (index->page == FIL_NULL
 	    || dict_index_is_online_ddl(index)
@@ -668,7 +668,7 @@ btr_get_size_and_reserved(
 	ulint		dummy;
 
 	ut_ad(mtr_memo_contains(mtr, dict_index_get_lock(index),
-				MTR_MEMO_S_LOCK));
+				MTR_MEMO_SX_LOCK));
 
 	ut_a(flag == BTR_N_LEAF_PAGES || flag == BTR_TOTAL_SIZE);
 

storage/innobase/dict/dict0defrag_bg.cc

 /*****************************************************************************
 
-Copyright (c) 2016, 2019, MariaDB Corporation.
+Copyright (c) 2016, 2022, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -280,7 +280,7 @@ dict_stats_save_defrag_stats(
 	ulint	n_leaf_pages;
 	ulint	n_leaf_reserved;
 	mtr.start();
-	mtr_s_lock_index(index, &mtr);
+	mtr_sx_lock_index(index, &mtr);
 	n_leaf_reserved = btr_get_size_and_reserved(index, BTR_N_LEAF_PAGES,
 						    &n_leaf_pages, &mtr);
 	mtr.commit();

storage/innobase/dict/dict0stats.cc

 /*****************************************************************************
 
 Copyright (c) 2009, 2019, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2015, 2021, MariaDB Corporation.
+Copyright (c) 2015, 2022, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -851,7 +851,7 @@ dict_stats_update_transient_for_index(
 		ulint	size;
 
 		mtr.start();
-		mtr_s_lock_index(index, &mtr);
+		mtr_sx_lock_index(index, &mtr);
 		size = btr_get_size(index, BTR_TOTAL_SIZE, &mtr);
 
 		if (size != ULINT_UNDEFINED) {
@@ -1944,7 +1944,7 @@ static index_stats_t dict_stats_analyze_index(dict_index_t* index)
 	DEBUG_PRINTF("  %s(index=%s)\n", __func__, index->name());
 
 	mtr.start();
-	mtr_s_lock_index(index, &mtr);
+	mtr_sx_lock_index(index, &mtr);
 	size = btr_get_size(index, BTR_TOTAL_SIZE, &mtr);
 
 	if (size != ULINT_UNDEFINED) {