# This is the test for Information Schema System Table View
# that displays the InnoDB system table content through
# information schema tables.

--source include/have_innodb.inc

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_INDEXES;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FIELDS;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN_COLS;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS;

# Create a foreign key constraint, and verify the information
# in INFORMATION_SCHEMA.INNODB_SYS_FOREIGN and
# INFORMATION_SCHEMA.INNODB_SYS_FOREIGN_COLS
CREATE TABLE parent (id INT NOT NULL,
                     PRIMARY KEY (id)) ENGINE=INNODB;

CREATE TABLE child (id INT, parent_id INT,
                    INDEX par_ind (parent_id),
		    CONSTRAINT constraint_test
                    FOREIGN KEY (parent_id) REFERENCES parent(id)
                      ON DELETE CASCADE) ENGINE=INNODB;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN_COLS;

# Insert a row in the table "parent", and see whether that reflected in
# INNODB_SYS_TABLESTATS
INSERT INTO parent VALUES(1);

SELECT name, num_rows, mysql_handles_opened
FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS
WHERE name LIKE "%parent";

SELECT NAME, FLAG, N_COLS, SPACE FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES;

SELECT name, n_fields
from INFORMATION_SCHEMA.INNODB_SYS_INDEXES
WHERE table_id In (SELECT table_id from
	INFORMATION_SCHEMA.INNODB_SYS_TABLES
	WHERE name LIKE "%parent%");

SELECT name, n_fields
from INFORMATION_SCHEMA.INNODB_SYS_INDEXES
WHERE table_id In (SELECT table_id from
	INFORMATION_SCHEMA.INNODB_SYS_TABLES
	WHERE name LIKE "%child%");

SELECT name, pos, mtype, len
from INFORMATION_SCHEMA.INNODB_SYS_COLUMNS
WHERE table_id In (SELECT table_id from
	INFORMATION_SCHEMA.INNODB_SYS_TABLES
	WHERE name LIKE "%child%");

DROP TABLE child;

DROP TABLE parent;

# Create table with 2 columns in the foreign key constraint
CREATE TABLE parent (id INT NOT NULL, newid INT NOT NULL,
                     PRIMARY KEY (id, newid)) ENGINE=INNODB;

CREATE TABLE child (id INT, parent_id INT,
                    INDEX par_ind (parent_id),
		    CONSTRAINT constraint_test
                    FOREIGN KEY (id, parent_id) REFERENCES parent(id, newid)
                      ON DELETE CASCADE) ENGINE=INNODB;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;

SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN_COLS;

INSERT INTO parent VALUES(1, 9);

# Nested query will open the table handle twice
SELECT * FROM parent WHERE id IN (SELECT id FROM parent);

SELECT name, num_rows, mysql_handles_opened
FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS
WHERE name LIKE "%parent";

DROP TABLE child;

DROP TABLE parent;