import a test case from percona-server-5.6.34-79.1

Author: vuvova

mysql-test/extra/table_index_statistics.inc

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+# include file to test index and table statstics for specific storage engine
+# requires includer set the default strorage engine for the session
+
+# Bug 602047 (wrong rows_read value)
+
+FLUSH INDEX_STATISTICS;
+FLUSH TABLE_STATISTICS;
+
+SET @userstat_old= @@userstat;
+SET GLOBAL userstat=ON;
+
+CREATE TABLE t1 (id int(10), PRIMARY KEY (id));
+INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
+SELECT COUNT(*) FROM t1; 
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t1';
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.INDEX_STATISTICS WHERE TABLE_NAME='t1';
+
+# Test that FLUSH clears one table but not another
+
+FLUSH TABLE_STATISTICS;
+
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t1';
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.INDEX_STATISTICS WHERE TABLE_NAME='t1';
+
+# Test that FLUSH clears both tables now
+
+FLUSH INDEX_STATISTICS;
+
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.INDEX_STATISTICS WHERE TABLE_NAME='t1';
+
+# Test that stats are collected after the FLUSH again
+
+SELECT COUNT(*) FROM t1; 
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t1';
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.INDEX_STATISTICS WHERE TABLE_NAME='t1';
+
+DROP TABLE t1;
+
+# Bug 1183625 (handler::update_global_table_stats crash).
+
+CREATE TABLE t2 (c1 INT UNSIGNED);
+
+ALTER TABLE t2 MODIFY c1 FLOAT;
+
+SELECT * FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t2';
+
+DROP TABLE t2;
+
+# Bug 1183625 (handler::update_global_table_stats crash).
+
+CREATE TABLE t2 (c1 INT UNSIGNED) ENGINE=InnoDB;
+
+ALTER TABLE t2 MODIFY c1 FLOAT;
+
+SELECT * FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t2';
+
+DROP TABLE t2;
+
+SET GLOBAL userstat= @userstat_old;

mysql-test/suite/innodb/r/table_index_statistics.result

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+SET @default_storage_engine_old = @@session.default_storage_engine;
+SET SESSION default_storage_engine = INNODB;
+FLUSH INDEX_STATISTICS;
+FLUSH TABLE_STATISTICS;
+SET @userstat_old= @@userstat;
+SET GLOBAL userstat=ON;
+CREATE TABLE t1 (id int(10), PRIMARY KEY (id));
+INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+10
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t1';
+ROWS_READ
+10
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.INDEX_STATISTICS WHERE TABLE_NAME='t1';
+ROWS_READ
+10
+FLUSH TABLE_STATISTICS;
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t1';
+ROWS_READ
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.INDEX_STATISTICS WHERE TABLE_NAME='t1';
+ROWS_READ
+10
+FLUSH INDEX_STATISTICS;
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.INDEX_STATISTICS WHERE TABLE_NAME='t1';
+ROWS_READ
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+10
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t1';
+ROWS_READ
+10
+SELECT ROWS_READ FROM INFORMATION_SCHEMA.INDEX_STATISTICS WHERE TABLE_NAME='t1';
+ROWS_READ
+10
+DROP TABLE t1;
+CREATE TABLE t2 (c1 INT UNSIGNED);
+ALTER TABLE t2 MODIFY c1 FLOAT;
+SELECT * FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t2';
+TABLE_SCHEMA	TABLE_NAME	ROWS_READ	ROWS_CHANGED	ROWS_CHANGED_X_INDEXES
+DROP TABLE t2;
+CREATE TABLE t2 (c1 INT UNSIGNED) ENGINE=InnoDB;
+ALTER TABLE t2 MODIFY c1 FLOAT;
+SELECT * FROM INFORMATION_SCHEMA.TABLE_STATISTICS WHERE TABLE_NAME='t2';
+TABLE_SCHEMA	TABLE_NAME	ROWS_READ	ROWS_CHANGED	ROWS_CHANGED_X_INDEXES
+DROP TABLE t2;
+SET GLOBAL userstat= @userstat_old;
+SET SESSION default_storage_engine = @default_storage_engine_old;

mysql-test/suite/innodb/t/table_index_statistics.test

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+--source include/have_innodb.inc
+
+SET @default_storage_engine_old = @@session.default_storage_engine;
+SET SESSION default_storage_engine = INNODB;
+
+--source extra/table_index_statistics.inc
+
+SET SESSION default_storage_engine = @default_storage_engine_old;