- 1. Divide And Be Conquered? 04/23/2009Brooks Johnson
[email_address]
2. Performance not guaranteed
- Does not automatically improve performance
3. Often degrades performance 4. In theory could improve
concurrency 5. First cover InnoDB 6. Then MyISAM 7. Finish up with
admin improvements 8. No Partition - Classic Primary KeyCREATE
TABLE`test`.`SaleO` ( `orderId` int(11) NOT NULL, `customerId`
int(11) NOT NULL, `productId` int(11) NOT NULL, `productBigId`
int(11) NOT NULL, `unit` int(11) NOT NULL, `purchaseAmount`
decimal(16,2) NOT NULL, `purchaseCost` decimal(16,2) NOT NULL,
`purchaseDate` datetime NOT NULL, PRIMARY KEY (`orderId`), KEY
`idx_sale_purchasedate` (`purchaseDate`), KEY `idx_sale_product`
(`productId`), KEY `idx_sale_customer` (`customerId`) )
ENGINE=InnoDB DEFAULT CHARSET=utf8; 9. Partitioning by Date (Month)
CREATE TABLE`test`.`SaleP` ( `orderId` int(11) NOT NULL,
`customerId` int(11) NOT NULL, `productId` int(11) NOT NULL,
`productBigId` int(11) NOT NULL, `unit` int(11) NOT NULL,
`purchaseAmount` decimal(16,2) NOT NULL, `purchaseCost`
decimal(16,2) NOT NULL, `purchaseDate` datetime NOT NULL, PRIMARY
KEY (`purchaseDate`,`orderId`), KEY `idx_sale_product`
(`productId`), KEY `idx_sale_order` (`orderId`), KEY
`idx_SaleP_orderId` (`orderId`) ) ENGINE=InnoDB DEFAULT
CHARSET=utf8 PARTITION BY RANGE (to_days(purchaseDate)) (PARTITION
p0 VALUES LESS THAN (730882) ENGINE = InnoDB, PARTITION p1 VALUES
LESS THAN (730910) ENGINE = InnoDB, PARTITION p2 VALUES LESS THAN
(730941) ENGINE = InnoDB, PARTITION p3 VALUES LESS THAN (730971)
ENGINE = InnoDB, PARTITION p4 VALUES LESS THAN (731002) ENGINE =
InnoDB, PARTITION p5 VALUES LESS THAN (731032) ENGINE = InnoDB,
PARTITION p6 VALUES LESS THAN (731063) ENGINE = InnoDB, PARTITION
p7 VALUES LESS THAN (731094) ENGINE = InnoDB, PARTITION p8 VALUES
LESS THAN (731124) ENGINE = InnoDB, PARTITION p9 VALUES LESS THAN
(731155) ENGINE = InnoDB, PARTITION p10 VALUES LESS THAN (731185)
ENGINE = InnoDB, PARTITION p11 VALUES LESS THAN (731216) ENGINE =
InnoDB, PARTITION p12 VALUES LESS THAN MAXVALUE ENGINE = InnoDB)
10. Partition by Order CREATE TABLE`test`.`SaleOPO` ( `orderId`
int(11) NOT NULL, `customerId` int(11) NOT NULL, `productId`
int(11) NOT NULL, `productBigId` int(11) NOT NULL, `unit` int(11)
NOT NULL, `purchaseAmount` decimal(16,2) NOT NULL, `purchaseCost`
decimal(16,2) NOT NULL, `purchaseDate` datetime NOT NULL, PRIMARY
KEY (`orderId`), KEY `idx_sale_purchasedate` (`purchaseDate`), KEY
`idx_sale_product` (`productId`), KEY `idx_sale_customer`
(`customerId`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 PARTITION BY
HASH (orderID) PARTITIONS 12 11. Sum Month without Partitioning
explain partitions select sum(purchaseCost) from SaleOwhere
purchaseDate >= '2001-12-01'and purchaseDate = '2001-12-01'and
purchaseDate explain partitions select sum(purchaseCost) from
SaleOPO ->where purchaseDate >= '2001-12-01' ->and
purchaseDate = '2001-12-01' and purchaseDate = '2001-12-01' and
purchaseDate = '2001-12-01' and purchaseDate
