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-- source include/not_embedded.inc
-- source include/have_innodb.inc
-- source ../include/ps_truncate_all_tables.inc
# Tests for sys schema
# Verify the sys.schema_tables_with_full_table_scans view
# Ensure structure changes don't slip in
DESC sys.schema_tables_with_full_table_scans;
# Make sure view select does not error, but ignore results
--disable_result_log
SELECT * FROM sys.schema_tables_with_full_table_scans;
--enable_result_log
# Ensure structure changes don't slip in
DESC sys.x$schema_tables_with_full_table_scans;
# Make sure view select does not error, but ignore results
--disable_result_log
SELECT * FROM sys.x$schema_tables_with_full_table_scans;
--enable_result_log
# Create a dummy table, force some full table scans, verify the results
CREATE TABLE test.t (i BIGINT AUTO_INCREMENT PRIMARY KEY, j BIGINT) ENGINE = innodb;
INSERT INTO test.t (j) VALUES (1), (2), (3);
INSERT INTO test.t (j) (SELECT j*2 FROM test.t);
INSERT INTO test.t (j) (SELECT j*2 FROM test.t);
INSERT INTO test.t (j) (SELECT j*2 FROM test.t);
INSERT INTO test.t (j) (SELECT j*2 FROM test.t);
INSERT INTO test.t (j) (SELECT j*2 FROM test.t);
INSERT INTO test.t (j) (SELECT j*2 FROM test.t);
INSERT INTO test.t (j) (SELECT j*2 FROM test.t);
INSERT INTO test.t (j) (SELECT j*2 FROM test.t);
# The table should now have 768 rows
# Now truncate the P_S tables, to get fresh results
CALL sys.ps_truncate_all_tables(false);
# Following returns 28 rows, but should full scan as j has no index
# Using RAND() to force no query caching, so ignore results, they are not important
--disable_ps2_protocol
--disable_result_log
SELECT i, j, RAND() FROM test.t WHERE j = 12;
--enable_result_log
--enable_ps2_protocol
# Ensure the base performance schema data is aggregated first
--let $wait_condition= SELECT COUNT_STAR = 768 FROM performance_schema.table_io_waits_summary_by_index_usage WHERE object_schema = 'test' AND object_name = 't' AND index_name IS NULL
--source include/wait_condition.inc
# Now verify the table shows up in the views with the right row count (should be 768)
SELECT object_schema, object_name, rows_full_scanned FROM sys.schema_tables_with_full_table_scans;
SELECT object_schema, object_name, rows_full_scanned FROM sys.x$schema_tables_with_full_table_scans;
# Scan again
--disable_ps2_protocol
--disable_result_log
SELECT i, j, RAND() FROM test.t WHERE j = 12;
--enable_result_log
--enable_ps2_protocol
# Again ensure the base performance schema data is aggregated first
--let $wait_condition= SELECT COUNT_STAR = 1536 FROM performance_schema.table_io_waits_summary_by_index_usage WHERE object_schema = 'test' AND object_name = 't' AND index_name IS NULL
--source include/wait_condition.inc
# Now verify that double the amount of rows in the table should be shown as scanned (should be 1536)
SELECT object_schema, object_name, rows_full_scanned FROM sys.schema_tables_with_full_table_scans;
SELECT object_schema, object_name, rows_full_scanned FROM sys.x$schema_tables_with_full_table_scans;
# Do a point lookup
SELECT * FROM test.t WHERE i = 10;
# The number of rows scanned should not have changed (should still be 1536)
SELECT object_schema, object_name, rows_full_scanned FROM sys.schema_tables_with_full_table_scans;
SELECT object_schema, object_name, rows_full_scanned FROM sys.x$schema_tables_with_full_table_scans;
# Cleanup
DROP TABLE test.t;
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