mirror of
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00dfb12b92
can now view the content of InnoDB System Tables through following information schema tables: information_schema.INNODB_SYS_TABLES information_schema.INNODB_SYS_INDEXES information_schema.INNODB_SYS_COUMNS information_schema.INNODB_SYS_FIELDS information_schema.INNODB_SYS_FOREIGN information_schema.INNODB_SYS_FOREIGN_COLS information_schema.INNODB_SYS_TABLESTATS rb://330 Approved by Marko
94 lines
2.8 KiB
Text
94 lines
2.8 KiB
Text
# This is the test for Information Schema System Table View
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# that displays the InnoDB system table content through
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# information schema tables.
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--source include/have_innodb.inc
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_INDEXES;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FIELDS;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN_COLS;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS;
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# Create a foreign key constraint, and verify the information
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# in INFORMATION_SCHEMA.INNODB_SYS_FOREIGN and
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# INFORMATION_SCHEMA.INNODB_SYS_FOREIGN_COLS
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CREATE TABLE parent (id INT NOT NULL,
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PRIMARY KEY (id)) ENGINE=INNODB;
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CREATE TABLE child (id INT, parent_id INT,
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INDEX par_ind (parent_id),
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CONSTRAINT constraint_test
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FOREIGN KEY (parent_id) REFERENCES parent(id)
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ON DELETE CASCADE) ENGINE=INNODB;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN_COLS;
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# Insert a row in the table "parent", and see whether that reflected in
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# INNODB_SYS_TABLESTATS
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INSERT INTO parent VALUES(1);
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SELECT name, num_rows, mysql_handles_opened
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FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS
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WHERE name LIKE "%parent";
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SELECT NAME, FLAG, N_COLS, SPACE FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES;
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SELECT name, n_fields
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from INFORMATION_SCHEMA.INNODB_SYS_INDEXES
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WHERE table_id In (SELECT table_id from
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INFORMATION_SCHEMA.INNODB_SYS_TABLES
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WHERE name LIKE "%parent%");
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SELECT name, n_fields
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from INFORMATION_SCHEMA.INNODB_SYS_INDEXES
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WHERE table_id In (SELECT table_id from
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INFORMATION_SCHEMA.INNODB_SYS_TABLES
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WHERE name LIKE "%child%");
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SELECT name, pos, mtype, len
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from INFORMATION_SCHEMA.INNODB_SYS_COLUMNS
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WHERE table_id In (SELECT table_id from
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INFORMATION_SCHEMA.INNODB_SYS_TABLES
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WHERE name LIKE "%child%");
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DROP TABLE child;
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DROP TABLE parent;
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# Create table with 2 columns in the foreign key constraint
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CREATE TABLE parent (id INT NOT NULL, newid INT NOT NULL,
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PRIMARY KEY (id, newid)) ENGINE=INNODB;
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CREATE TABLE child (id INT, parent_id INT,
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INDEX par_ind (parent_id),
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CONSTRAINT constraint_test
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FOREIGN KEY (id, parent_id) REFERENCES parent(id, newid)
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ON DELETE CASCADE) ENGINE=INNODB;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN_COLS;
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INSERT INTO parent VALUES(1, 9);
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# Nested query will open the table handle twice
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SELECT * FROM parent WHERE id IN (SELECT id FROM parent);
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SELECT name, num_rows, mysql_handles_opened
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FROM INFORMATION_SCHEMA.INNODB_SYS_TABLESTATS
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WHERE name LIKE "%parent";
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DROP TABLE child;
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DROP TABLE parent;
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