如何检查SQL中的Series中的所有数字

Question

如何检查SQL中的Series中的所有数字

CityFrom   CityTo   AwbnoFrom   AwbNoTo

Delhi       Mumbai    10          13
delhi       Patna     35          38
Delhi       Pune      39          41

我想这样输出： -

CityFrom    CityTo    TotalAwbNo

Delhi        Mumbai      10
Delhi        Mumbai      11
Delhi        Mumbai      12
Delhi        Mumbai      13
Delhi        Patna       35
Delhi        Patna       36
Delhi        Patna       37
Delhi        Patna       38
Delhi        Pune        39
Delhi        Pune        40
Delhi        Pune        41

Answer 1

如果您正在使用SQL Server，那么递归CTE可能会有用。

WITH CTE AS
(
    SELECT CityFrom, CityTo, AwbnoFrom,  AwbNoTo from table
    UNION ALL
    SELECT CityFrom, CityTo, AwbnoFrom+1, AwbNoTo
    FROM cte
    WHERE AwbnoFrom < AwbNoTo
)

SELECT CityFrom, CityTo, AwbnoFrom AS TotalAwbNo 
FROM cte
ORDER BY CityFrom, CityTo, AwbnoFrom
OPTION (MAXRECURSION 0)