Added a test for the schema_tables_with_full_table_scans view, to try and reproduce Issue #8 (and it could not be reproduced).

Author: MarkLeith

mysql-test/suite/sysschema/r/v_schema_tables_with_full_table_scans.result

@@ -0,0 +1,63 @@
+DESC sys.schema_tables_with_full_table_scans;
+Field	Type	Null	Key	Default	Extra
+object_schema	varchar(64)	YES		NULL	
+object_name	varchar(64)	YES		NULL	
+rows_full_scanned	bigint(20) unsigned	NO		NULL	
+latency	text	YES		NULL	
+DESC sys.x$schema_tables_with_full_table_scans;
+Field	Type	Null	Key	Default	Extra
+object_schema	varchar(64)	YES		NULL	
+object_name	varchar(64)	YES		NULL	
+rows_full_scanned	bigint(20) unsigned	NO		NULL	
+latency	bigint(20) unsigned	NO		NULL	
+CREATE DATABASE v_schema_tables_with_full_table_scans;
+CREATE TABLE v_schema_tables_with_full_table_scans.t (i BIGINT AUTO_INCREMENT PRIMARY KEY, j BIGINT) ENGINE = innodb;
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) VALUES (1), (2), (3);
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+CALL sys.ps_truncate_all_tables(false);
+summary
+Truncated 44 tables
+SELECT * FROM v_schema_tables_with_full_table_scans.t WHERE j = 12;
+i	j
+12	12
+19	12
+22	12
+34	12
+37	12
+43	12
+65	12
+68	12
+74	12
+86	12
+128	12
+131	12
+137	12
+149	12
+173	12
+255	12
+258	12
+264	12
+276	12
+300	12
+348	12
+510	12
+513	12
+519	12
+531	12
+555	12
+603	12
+699	12
+SELECT object_schema, object_name, rows_full_scanned FROM sys.schema_tables_with_full_table_scans;
+object_schema	object_name	rows_full_scanned
+v_schema_tables_with_full_table_scans	t	768
+SELECT object_schema, object_name, rows_full_scanned FROM sys.x$schema_tables_with_full_table_scans;
+object_schema	object_name	rows_full_scanned
+v_schema_tables_with_full_table_scans	t	768
+DROP DATABASE v_schema_tables_with_full_table_scans;

mysql-test/suite/sysschema/t/v_schema_tables_with_full_table_scans.test

@@ -0,0 +1,45 @@
+# Tests for sys schema
+# Verify the sys.schema_tables_with_full_table_scans/sys.x$schema_tables_with_full_table_scans views
+
+DESC sys.schema_tables_with_full_table_scans;
+
+DESC sys.x$schema_tables_with_full_table_scans;
+
+# Create a dummy table, force some full table scans, verify the results
+CREATE DATABASE v_schema_tables_with_full_table_scans;
+
+CREATE TABLE v_schema_tables_with_full_table_scans.t (i BIGINT AUTO_INCREMENT PRIMARY KEY, j BIGINT) ENGINE = innodb;
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) VALUES (1), (2), (3);
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.t);
+
+INSERT INTO v_schema_tables_with_full_table_scans.t (j) (SELECT j*2 FROM v_schema_tables_with_full_table_scans.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
+SELECT * FROM v_schema_tables_with_full_table_scans.t WHERE j = 12;
+
+# Now verify the table shows up in the views with the right row count
+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 DATABASE v_schema_tables_with_full_table_scans;