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47 lines
2.2 KiB
Plaintext
47 lines
2.2 KiB
Plaintext
SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_POOL_STATS;
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SELECT count(*) FROM INFORMATION_SCHEMA.INNODB_BUFFER_POOL_STATS;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE;
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SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE;
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CREATE TABLE infoschema_buffer_test (col1 INT) ENGINE = INNODB;
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INSERT INTO infoschema_buffer_test VALUES(9);
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SELECT TABLE_NAME, INDEX_NAME, NUMBER_RECORDS, DATA_SIZE, PAGE_STATE, PAGE_TYPE
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_buffer_test%"
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and PAGE_STATE="file_page" and PAGE_TYPE="index";
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TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE PAGE_STATE PAGE_TYPE
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`test`.`infoschema_buffer_test` GEN_CLUST_INDEX 1 29 FILE_PAGE INDEX
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INSERT INTO infoschema_buffer_test VALUES(19);
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SELECT TABLE_NAME, INDEX_NAME, NUMBER_RECORDS, DATA_SIZE, PAGE_STATE, PAGE_TYPE
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_buffer_test%"
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and PAGE_STATE="file_page" and PAGE_TYPE="index";
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TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE PAGE_STATE PAGE_TYPE
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`test`.`infoschema_buffer_test` GEN_CLUST_INDEX 2 58 FILE_PAGE INDEX
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CREATE INDEX idx ON infoschema_buffer_test(col1);
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SELECT TABLE_NAME, INDEX_NAME, NUMBER_RECORDS, DATA_SIZE, PAGE_STATE, PAGE_TYPE
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_buffer_test%"
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and PAGE_STATE="file_page" and INDEX_NAME = "idx" and PAGE_TYPE="index";
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TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE PAGE_STATE PAGE_TYPE
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`test`.`infoschema_buffer_test` idx 2 32 FILE_PAGE INDEX
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DROP TABLE infoschema_buffer_test;
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SELECT TABLE_NAME, INDEX_NAME, NUMBER_RECORDS, DATA_SIZE, PAGE_STATE, PAGE_TYPE
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_buffer_test%";
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TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE PAGE_STATE PAGE_TYPE
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CREATE TABLE infoschema_parent (id INT NOT NULL, PRIMARY KEY (id))
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ENGINE=INNODB;
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CREATE TABLE infoschema_child (id INT, parent_id INT, INDEX par_ind (parent_id),
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FOREIGN KEY (parent_id)
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REFERENCES infoschema_parent(id)
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ON DELETE CASCADE)
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ENGINE=INNODB;
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SELECT count(*)
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_child%" and PAGE_STATE="file_page"
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and PAGE_TYPE="index";
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count(*)
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2
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DROP TABLE infoschema_child;
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DROP TABLE infoschema_parent;
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