04 2020 档案

摘要:with data as ( select '2020-04-15' as day,'收入' as type,'test1' as name,100 as amt, 5000 as bal union all select '2020-04-16' as day,'支出' as type,'test 阅读全文
posted @ 2020-04-20 18:28 chenzechao 阅读(172) 评论(0) 推荐(0) 编辑
摘要:-- Mysql按指定分组排序 select t5.task_id ,concat('TH-',t5.proj_name,'-',lpad(rn,7,'0')) as id ,t5.complaint -- 详细地址 ,t5.requester -- 联络人 ,t5.phone -- 电话 ,t5. 阅读全文
posted @ 2020-04-20 09:05 chenzechao 阅读(1140) 评论(0) 推荐(0) 编辑
摘要:https://www.postgresql.org/download/linux/redhat/ yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-l 阅读全文
posted @ 2020-04-10 22:22 chenzechao 阅读(410) 评论(0) 推荐(0) 编辑
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posted @ 2020-04-03 17:32 chenzechao 阅读(1) 评论(0) 推荐(0) 编辑
摘要:如为8.0以上版本,可以直接使用原生的json解析器处理,低版本不支持 set @fild='"},{"'; SELECT t1.id ,t2.num_rn ,substring_index(substring_index(t1.image_file,@fild, t2.num_rn + 1), ' 阅读全文
posted @ 2020-04-03 11:33 chenzechao 阅读(1660) 评论(0) 推荐(0) 编辑

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