summaryrefslogtreecommitdiffstats
path: root/mysql-test/include/execute_with_statistics.inc
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
commit3f619478f796eddbba6e39502fe941b285dd97b1 (patch)
treee2c7b5777f728320e5b5542b6213fd3591ba51e2 /mysql-test/include/execute_with_statistics.inc
parentInitial commit. (diff)
downloadmariadb-upstream.tar.xz
mariadb-upstream.zip
Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'mysql-test/include/execute_with_statistics.inc')
-rw-r--r--mysql-test/include/execute_with_statistics.inc30
1 files changed, 30 insertions, 0 deletions
diff --git a/mysql-test/include/execute_with_statistics.inc b/mysql-test/include/execute_with_statistics.inc
new file mode 100644
index 00000000..c2305fe5
--- /dev/null
+++ b/mysql-test/include/execute_with_statistics.inc
@@ -0,0 +1,30 @@
+# include/execute_with_statistics.inc
+#
+# SUMMARY
+#
+# Explain and execute the select statment in $query.
+# Then report 'Last_query_cost' estimate from the query
+# optimizer and total number of 'Handler_read%' when the
+# query was executed.
+# Intended usage is to verify that there are not regressions
+# in either calculated or actuall cost for $query.
+#
+# USAGE
+#
+# let $query= <select statement>;
+# --source include/execute_with_statistics.inc
+#
+# EXAMPLE
+# t/greedy_optimizer.test
+#
+
+eval EXPLAIN $query;
+SHOW STATUS LIKE 'Last_query_cost';
+
+FLUSH STATUS;
+eval $query;
+--disable_warnings
+SELECT SUM(variable_value) AS Total_handler_reads
+ FROM information_schema.session_status
+ WHERE variable_name LIKE 'Handler_read%';
+--enable_warnings