C++博客-天下-随笔分类-MySQL

Python和MySQL时间处理

天下 — Wed, 23 Dec 2015 03:51:00 GMT

#Python
import time
time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(1450842012))

#MySQL
SELECT UNIX_TIMESTAMP(NOW()) as `timestamp`,NOW() as `now`;

天下 2015-12-23 11:51 发表评论

存储过程（2）

天下 — Mon, 14 Dec 2015 12:39:00 GMT

#1.修改my.conf
# max_sp_recursion_depth = 16

delimiter //
CREATE TRIGGER doc_add AFTER INSERT ON doc_threads
for each row begin
update doc_forums set records=records+1 where fid=new.fid;
call syncfid(new.fid,1);
end;//
delimiter ;

delimiter //
CREATE TRIGGER doc_move AFTER UPDATE ON doc_threads
for each row begin
IF old.fid != new.fid then
update doc_forums set records=records+1 where fid=new.fid;
update doc_forums set records=records-1 where fid=old.fid;
call syncfid(new.fid,1);
call syncfid(old.fid,-1);
end IF;
end;
//
delimiter ;

delimiter //
CREATE TRIGGER doc_del AFTER DELETE ON doc_threads
for each row begin
update doc_forums set records=records-1 where fid=old.fid;
call syncfid(old.fid,-1);
end;//
delimiter ;

delimiter //
CREATE PROCEDURE `syncfid`(infid int,n int)
BEGIN
    declare tmpfid int default 0;
    SELECT fup into tmpfid from doc_forums where fid=infid;
    if tmpfid THEN
        update doc_forums set records=records+(n) where fid=tmpfid;
        call syncfid(tmpfid,n);
    end if;
END; //
delimiter ;

天下 2015-12-14 20:39 发表评论

存储过程（1）

天下 — Mon, 14 Dec 2015 12:38:00 GMT

DROP TABLE IF EXISTS `index1`;
CREATE TABLE `index1` (
  `id` bigint(20) unsigned NOT NULL,
  `weight` int(10) NOT NULL,
  `query` varchar(255) NOT NULL,
  `field_id` bigint(20) DEFAULT NULL,
  KEY `query` (`query`)
) ENGINE=SPHINX DEFAULT CHARSET=utf8 CONNECTION='sphinx://127.0.0.1:3312/index1'

$sql = "
SELECT *
FROM index1 as i
LEFT JOIN cms_item as c
ON (i.id=c.item_id)
WHERE 1 AND
i.id=c.item_id AND
query='$keyword'
";

delimiter //
CREATE FUNCTION getRelatedWords(inkeyword varchar(255)) RETURNS varchar(255)
BEGIN
    DECLARE pid bigint(20) DEFAULT 0;
    DECLARE keywords varchar(255) DEFAULT '';
    SELECT synonym_id into pid from cms_synonym where content=inkeyword;
    SELECT content into keywords from cms_synonym_subword where synonym_id=pid;
    RETURN keywords;
END; //
delimiter ;

select get_related_words("中国");

BEGIN
        -- 获取父分类编码
        DECLARE parent_class_code varchar(255) DEFAULT '';
        DECLARE child_class_code varchar(255) DEFAULT '';
       DECLARE v1 INT DEFAULT 1;

       IF parent_class_id > 0 THEN
           SELECT class_code into parent_class_code FROM cms_resource_class WHERE class_id=parent_class_id;
       END IF;
           WHILE v1 <= 999 DO
                SET child_class_code=concat(parent_class_code,right( convert(1000 + v1,char(4)),3));
                IF exists( select class_id from cms_resource_class where  class_code =child_class_code ) THEN
                    SET v1=v1+1;
                ELSE
                    RETURN child_class_code;
                END IF;
           END WHILE;
    RETURN '';
END;;

delimiter //
CREATE FUNCTION `getRelatedWords`(inkeyword varchar) RETURNS varchar(255)
BEGIN
    -- DECLARE child_class_code varchar(255) DEFAULT '';
    DECLARE pid bigint(20) DEFAULT 0;
    SELECT synonym_id into pid from cms_synonym where content=inkeyword;
    SELECT content from cms_synonym_subword where synonym_id=pid;
    -- SELECT synonym_id into tmpfid from doc_forums where fid=infid;
END; //
delimiter ;

delimiter //
CREATE FUNCTION getRelatedWords(inkeyword varchar(255)) RETURNS varchar(255)
BEGIN
    DECLARE pid bigint(20) DEFAULT 0;
    SELECT synonym_id into pid from cms_synonym where content=inkeyword;
    SELECT content  from cms_synonym_subword where synonym_id=pid;
END; //
delimiter ;

天下 2015-12-14 20:38 发表评论

MySQL 触发器

天下 — Mon, 14 Dec 2015 12:37:00 GMT

DROP TRIGGER IF EXISTS `nw_sn_info_update`;
DELIMITER ;;
CREATE TRIGGER `nw_sn_info_update` AFTER UPDATE ON `nw_sn_info` FOR EACH ROW begin
replace into nw_sn_info_trigger set auto_id=new.auto_id;
end
;;
DELIMITER ;

DROP TRIGGER IF EXISTS `nw_sn_info_delete`;
DELIMITER ;;
CREATE TRIGGER `nw_sn_info_delete` BEFORE DELETE ON `nw_sn_info` FOR EACH ROW begin
delete FROM nw_sn_info_trigger where auto_id=old.auto_id;
end
;
DELIMITER ;

DROP TRIGGER IF EXISTS `nw_sn_status_update`;
DELIMITER ;;
CREATE TRIGGER `nw_sn_status_update` AFTER UPDATE ON `nw_sn_status` FOR EACH ROW begin
replace into nw_sn_status_trigger set product_sn=new.product_sn;
end
;;
DELIMITER ;

DROP TRIGGER IF EXISTS `nw_sn_status_delete`;
DELIMITER ;;
CREATE TRIGGER `nw_sn_status_delete` BEFORE DELETE ON `nw_sn_status` FOR EACH ROW begin
delete FROM nw_sn_status_trigger where product_sn=old.product_sn;
end
;;
DELIMITER ;

天下 2015-12-14 20:37 发表评论

安装mysql服务

天下 — Wed, 22 Jul 2015 01:04:00 GMT

摘要: 安装mysql服务自动启动mysqld.exe --install MySQL5.6安装mysql服务手动启动mysqld.exe --install-manual启动服务：net start MySQL5.6删除MySQL服务：mysqld.exe --remove使用帮助:mysqld.exe --verbose --helpmysqld.exe Ver 5.6.24 ... 阅读全文

天下 2015-07-22 09:04 发表评论