sqlite3：靠近“（”：语法错误 - python 代码

Question

我收到此查询的语法错误，无法弄清楚我在其中犯了什么错误。

db = sqlite3.connect('C:\Users\Siva Sakthi Velan\Downloads\Intranet\mobiveil.db')
sql = """select cast(sum(datediff(second,0,Total_Hours))/3600 as varchar(12)) + ':' +right( '0' + cast(sum(datediff(second,0,Total_Hours))/60%60 as varchar(2)),2) +':' + right('0' + cast(sum(datediff(second,0,Total_Hours))%60 as varchar(2)),2) from  timesheet order by Date group by Task_Category where Date >=? and Date<=?"""
sq1 = db.execute(sql,(str(From),str(To)))

error: near "(": syntax error

我该如何纠正？

Answer 1

你不能在 SQLite 中使用 right()；有 no such function。使用 substr() 代替：

substr(...., -2)

获取最后两个字符。

您还需要固定 where、group by 和 order by 子句的顺序；这些有 strict order:

...
from timesheet
where Date >=? and Date<=?
group by Task_Category
order by Date

先是WHERE，然后是GROUP BY，然后是ORDER BY。

sqlite3：靠近“（”：语法错误 - python 代码

sqlite3 : near "(": syntax error - python code

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