全部博文(512)
发布时间:2020-11-25 18:10:34
django 如何同时使用sqlalchemy呢特别是 query时候,因为query sqlalchemy更加灵活使用步骤如下一、安装pip install aldjemy二、配置修改 setting.pyINSTALLED_APPSSession().query(......【阅读全文】
发布时间:2020-11-25 10:46:08
mysql出现which is not functionally dependent on columns in GROUP BY clause报错解决方案方案一:修改SQL语句,每个字段前加上any_value SELECT any_value(id) AS id,any_value(uid),any_value(rid) FROM sys_user_role WHERE (rid = '1259293401992036353') GROUP BY uid;.........【阅读全文】
发布时间:2020-11-25 10:45:34
mysql出现which is not functionally dependent on columns in GROUP BY clause报错解决方案方案一:修改SQL语句,每个字段前加上any_value SELECT any_value(id) AS id,any_value(uid),any_value(rid) FROM sys_user_role WHERE (rid = '1259293401992036353') GROUP BY uid;.........【阅读全文】
发布时间:2020-11-25 10:44:35
方案一:修改SQL语句,每个字段前加上any_value SELECT any_value(id) AS id,any_value(uid),any_value(rid) FROM sys_user_role WHERE (rid = '1259293401992036353') GROUP BY uid;......【阅读全文】
发布时间:2020-11-25 10:44:07
方案一:修改SQL语句,每个字段前加上any_value SELECT any_value(id) AS id,any_value(uid),any_value(rid) FROM sys_user_role WHERE (rid = '1259293401992036353') GROUP BY uid;......【阅读全文】
AAAA888AA82013-11-21 19:26
用 sed 寫一個程式, 從 stdin 讀進, 過濾後寫到 stdout. 過濾條件如下:
將 comment 刪除.
若 commnet 刪除後為一空行, 則刪掉這行.
若為一空行, 則刪掉這行.
若 $ 後接一串數字, 則把 $ 刪除.
把 $klim 換成 $milk
把 $milk 換成 $oak
範例如下:
=======this-is-my-prompt====== cat IN-5
# this is a comment line.
$klim owes $milk $1000 # comment here
$milk wins $oak 20000
Klim owes milk $$1000 # comment
# comment line also
milk wins $oak $20000
=======this-is-my-prompt====== ./ex5 < IN-5
$milk owes $oak 1000
$oak wins $oak 20000
Klim owes milk $1000
milk wins $oak 20000
想請問這串 若 $ 後接一串數字, 則把 $ 刪除.
爬了不少聞問過不少人 都沒辦法只刪除前面的$ 請問這要怎麼打..