SELECT string_agg(format('%I(%s)', p.proname, pg_catalog.pg_get_function_identity_arguments(p.oid)),',') AS functions FROM pg_catalog.pg_proc p JOIN pg_catalog.pg_namespace n ON n.oid = p.pronamespace WHERE p.proname in ('version','current_catalog','current_database','curre...
可以使用FORMAT函数来格式化AVG函数返回的平均值 查询语句:SELECT expense_id,FORMAT(AVG(total),2) AS total FROM bms_bills_memo GROUP BY expense_id 结果:1 3.00 5 100,111.00 6 178.50 7 40,084.40 8 114.25 12 50,346.25 13 200,000.00 1. 2. 3. 4. 5. 6. 7. 8. 可以使用AVG()函数通过添加...
Select-String 使用当前线程的区域性设置进行匹配 . 你可以使用 Get-Culture cmdlet 来确定当前的区域性设置 . 要查看 MatchInfo 对象的全部属性 , 键入 : select-string -path test.txt -pattern "test" | get-member | format-list -property *. 例1 C:/PS>"Hello","HELLO" | select-string -pattern "...
代码审计的时候经常会遇到种类繁杂的转义函数，最可怕的是他们长的都很像，还是拿出来总结一下吧。
项目仓库所选许可证以仓库主分支所使用许可证为准 master 分支(1) 管理 管理 master 克隆/下载 HTTPSSSHSVNSVN+SSH 该操作需登录 Gitee 帐号,请先登录后再操作。 提示 下载代码请复制以下命令到终端执行 为确保你提交的代码身份被 Gitee 正确识别,请执行以下命令完成配置 ...
Conclusion TheSTRING_AGG()function in PostgreSQL, while seemingly straightforward, is versatile and powerful. By mastering both its fundamental and advanced applications, you can optimize database operations, making them both efficient and insightful. Whether for basic concatenation or intricate data aggreg...
But this has become a really messy query, even after forcing myself to format it for consistency rather than legibility. Hopefully you are on SQL Server 2017, or will be there soon, or are using Azure SQL Database, and you can accomplish all of this using much less convoluted...
1.清除空值可以通过使用array_remove来完成 1.通过StringAgg将字符串与分隔符连接起来只有在输入为字符串...
-- Call Syntax : Incorporate into queries as follows: -- COLUMN employees FORMAT A50 -- -- SELECT deptno, string_agg(ename) AS employees -- FROM emp -- GROUP BY deptno; -- -- DEPTNO EMPLOYEES -- --- --- -- 10 CLARK,KING,MILLER -- 20 SMITH,FORD,ADAMS,SCOTT,JONES -- 30 ALLEN...
DTS_E_SAVE_PERSTFORMAT 字段 DTS_E_SAVEFILE 字段 DTS_E_SAVEPACKAGEFILE 字段 DTS_E_SAVETOSQLSERVER_OLEDB 字段 DTS_E_SCHEDULERBADTREE 字段 DTS_E_SCHEDULERCOULDNOTCOUNTDESTINATIONS 字段 DTS_E_SCHEDULERCOULDNOTCOUNTSOURCES 字段 DTS_E_SCHEDULERMEMORY 字段 DTS_E_SCHEDULEROBJECT 字段 DTS_E_SCHEDULERTHRE...