大数据表分区

最新推荐文章于 2024-05-22 16:16:39 发布

lianhualianhua

最新推荐文章于 2024-05-22 16:16:39 发布

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分类专栏：大数据迁移

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本文链接：https://blog.youkuaiyun.com/lianhualianhua/article/details/84552688

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本文详细介绍了三个关键数据库表的设计：`stat_refurl1`、`stat_url1` 和 `stat_keyword1`。这些表用于存储URL引用、完整URL及其标题以及关键词等信息，并通过哈希值和范围分区进行高效管理。

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CREATE TABLE `stat_refurl1` (

`url` varchar(500) NOT NULL,

`urlhash` varchar(64) NOT NULL,

`hashcode` int(11) DEFAULT NULL,

UNIQUE KEY `IndexUnique` (`urlhash`,`hashcode`)

) ENGINE=innodb DEFAULT CHARSET=utf8

PARTITION BY RANGE (hashcode)

(PARTITION p0 VALUES LESS THAN (49) ENGINE = innodb,

PARTITION p1 VALUES LESS THAN (50) ENGINE = innodb,

PARTITION p2 VALUES LESS THAN (51) ENGINE = innodb,

PARTITION p3 VALUES LESS THAN (52) ENGINE = innodb,

PARTITION p4 VALUES LESS THAN (53) ENGINE = innodb,

PARTITION p5 VALUES LESS THAN (54) ENGINE = innodb,

PARTITION p6 VALUES LESS THAN (55) ENGINE = innodb,

PARTITION p7 VALUES LESS THAN (56) ENGINE = innodb,

PARTITION p8 VALUES LESS THAN (57) ENGINE = innodb,

PARTITION p9 VALUES LESS THAN (58) ENGINE = innodb,

PARTITION pa VALUES LESS THAN (98) ENGINE = innodb,

PARTITION pb VALUES LESS THAN (99) ENGINE = innodb,

PARTITION pc VALUES LESS THAN (100) ENGINE = innodb,

PARTITION pd VALUES LESS THAN (101) ENGINE = innodb,

PARTITION pe VALUES LESS THAN (102) ENGINE = innodb,

PARTITION pf VALUES LESS THAN MAXVALUE ENGINE = innodb)

CREATE TABLE `stat_url1` (

`url` varchar(500) NOT NULL,

`urlhash` varchar(64) NOT NULL,

`title` TEXT NOT NULL COMMENT '来源域名',

`hashcode` int(11) DEFAULT NULL,

UNIQUE KEY `IndexUnique` (`urlhash`,`hashcode`)

) ENGINE=innodb DEFAULT CHARSET=utf8

PARTITION BY RANGE (hashcode)

(PARTITION p0 VALUES LESS THAN (49) ENGINE = innodb,

PARTITION p1 VALUES LESS THAN (50) ENGINE = innodb,

PARTITION p2 VALUES LESS THAN (51) ENGINE = innodb,

PARTITION p3 VALUES LESS THAN (52) ENGINE = innodb,

PARTITION p4 VALUES LESS THAN (53) ENGINE = innodb,

PARTITION p5 VALUES LESS THAN (54) ENGINE = innodb,

PARTITION p6 VALUES LESS THAN (55) ENGINE = innodb,

PARTITION p7 VALUES LESS THAN (56) ENGINE = innodb,

PARTITION p8 VALUES LESS THAN (57) ENGINE = innodb,

PARTITION p9 VALUES LESS THAN (58) ENGINE = innodb,

PARTITION pa VALUES LESS THAN (98) ENGINE = innodb,

PARTITION pb VALUES LESS THAN (99) ENGINE = innodb,

PARTITION pc VALUES LESS THAN (100) ENGINE = innodb,

PARTITION pd VALUES LESS THAN (101) ENGINE = innodb,

PARTITION pe VALUES LESS THAN (102) ENGINE = innodb,

PARTITION pf VALUES LESS THAN MAXVALUE ENGINE = innodb)

CREATE TABLE `stat_keyword1` (

`keywordhash` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL,

`keyword` TEXT COLLATE utf8_bin,

`hashcode` int(11) DEFAULT NULL,

UNIQUE KEY `IndexUnique` (`keywordhash`,`hashcode`)

) ENGINE=innodb DEFAULT CHARSET=utf8

PARTITION BY RANGE (hashcode)

(PARTITION p0 VALUES LESS THAN (49) ENGINE = innodb,

PARTITION p1 VALUES LESS THAN (50) ENGINE = innodb,

PARTITION p2 VALUES LESS THAN (51) ENGINE = innodb,

PARTITION p3 VALUES LESS THAN (52) ENGINE = innodb,

PARTITION p4 VALUES LESS THAN (53) ENGINE = innodb,

PARTITION p5 VALUES LESS THAN (54) ENGINE = innodb,

PARTITION p6 VALUES LESS THAN (55) ENGINE = innodb,

PARTITION p7 VALUES LESS THAN (56) ENGINE = innodb,

PARTITION p8 VALUES LESS THAN (57) ENGINE = innodb,

PARTITION p9 VALUES LESS THAN (58) ENGINE = innodb,

PARTITION pa VALUES LESS THAN (98) ENGINE = innodb,

PARTITION pb VALUES LESS THAN (99) ENGINE = innodb,

PARTITION pc VALUES LESS THAN (100) ENGINE = innodb,

PARTITION pd VALUES LESS THAN (101) ENGINE = innodb,

PARTITION pe VALUES LESS THAN (102) ENGINE = innodb,

PARTITION pf VALUES LESS THAN MAXVALUE ENGINE = innodb)

DELIMITER $$

USE `new_stat`$$

DROP TRIGGER /*!50032 IF EXISTS */ `insertRefurl`$$

CREATE

/*!50017 DEFINER = 'root'@'219.224.%' */

TRIGGER `insertRefurl` BEFORE INSERT ON `stat_refurl1`

FOR EACH ROW BEGIN

SET NEW.hashcode = ASCII(LEFT(NEW.urlhash,1));

END;

$$

DELIMITER ;

DELIMITER $$

CREATE

TRIGGER `new_stat`.`insertUrl` BEFORE INSERT

ON `new_stat`.`stat_url1`

FOR EACH ROW BEGIN

SET NEW.hashcode = ASCII(LEFT(NEW.urlhash,1));

END$$

DELIMITER ;

DELIMITER $$

CREATE

/*[DEFINER = { user | CURRENT_USER }]*/

TRIGGER `new_stat`.`insertKeyWord` BEFORE INSERT

ON `new_stat`.`stat_keyword1`

FOR EACH ROW BEGIN

SET NEW.hashcode = ASCII(LEFT(NEW.keywordhash,1));

END$$

DELIMITER ;

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