Bug#47746 - main.innodb_mysql fails sporadically:

Mask part of EXPLAIN output with '#' to account for varying row count estimation.

mysql-test/include/mix1.inc:
  Mask 'rows' column in EXPLAIN output (number varies sometimes between 1 and 2).
mysql-test/r/innodb_mysql.result:
  Update result file after masking of rows estimation in EXPLAIN output.

mysql-test/include/mix1.inc

@@ -442,6 +442,8 @@ INSERT INTO t1(id, dept, age, name) VALUES
 EXPLAIN SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
 SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
 DELETE FROM t1;
+--echo # Masking (#) number in "rows" column of the following EXPLAIN output, as it may vary (bug#47746).
+--replace_column 9 #
 EXPLAIN SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
 SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
 

mysql-test/r/innodb_mysql.result

@@ -385,9 +385,10 @@ name	dept
 rs5	cs10
 rs5	cs9
 DELETE FROM t1;
+# Masking (#) number in "rows" column of the following EXPLAIN output, as it may vary (bug#47746).
 EXPLAIN SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	name	name	44	NULL	2	Using where; Using index for group-by
+1	SIMPLE	t1	range	name	name	44	NULL	#	Using where; Using index for group-by
 SELECT DISTINCT t1.name, t1.dept FROM t1 WHERE t1.name='rs5';
 name	dept
 DROP TABLE t1;