在Excel中的ODBC中与今天的日期和时间戳进行比较？

Question

Question

I'm querying a DataBase via Excel ODBC.

I can compare the field with an hard-coded date in my Excel's ODBC query with :

BOMD.BOMENDDAT_0 > {ts '2018-05-05 00:00:00'}

But I can't seem to make a proper comparison with the present date :

BOMD.BOMENDDAT_0 > {ts SYSDATETIME()}
DATEDIFF(d, SYSDATETIME(), BOMD.BOMENDDAT_0) > 0

Any suggestion ?

---

Context

I'm trying to build a query that select only records where the date of today is between :

• a start date ( BOMD.BOMSTRDAT_0 )
• an end date ( BOMD.BOMENDDAT_0 )

Those dates :

• are in a special format, they look like this in Excel : '26/02/2018 00:00:00'
  (French format, Day Month Year )
• can be filled or not
• 0 seems to be '00/01/1900 00:00:00'

The whole query look like this :

SELECT BOMD.BOMQTY_0, BOMD.UPDDAT_0, BOMD.BOMSTRDAT_0, BOMD.BOMENDDAT_0
FROM myDB.BOMD BOMD
WHERE BOMD.UPDDAT_0 > {ts '2018-01-01 00:00:00'}
AND (
    (BOMD.BOMSTRDAT_0 < {ts SYSDATETIME()})
    OR BOMD.BOMSTRDAT_0 = 0
    OR BOMD.BOMSTRDAT_0 is null
    )
AND (
    (BOMD.BOMENDDAT_0 > {ts SYSDATETIME()})
    OR BOMD.BOMENDDAT_0 = 0
    OR BOMD.BOMENDDAT_0 is null
    )

Answer 1

{ts '2018-05-05 00:00:00'} is used to convert string into datetime data type, you cannot use it on SYSDATETIME() which is already a datetime (precisely datetime2) data type, just make it:

SELECT BOMD.BOMQTY_0, BOMD.UPDDAT_0, BOMD.BOMSTRDAT_0, BOMD.BOMENDDAT_0
FROM myDB.BOMD BOMD
WHERE BOMD.UPDDAT_0 > {ts '2018-01-01 00:00:00'}
AND (
    (BOMD.BOMSTRDAT_0 < SYSDATETIME())
    OR BOMD.BOMSTRDAT_0 = 0
    OR BOMD.BOMSTRDAT_0 is null
    )
AND (
    (BOMD.BOMENDDAT_0 > SYSDATETIME())
    OR BOMD.BOMENDDAT_0 = 0
    OR BOMD.BOMENDDAT_0 is null
    )

btw, your code will also return rows where both BOMENDDAT_0 and BOMSTRDAT are zeros or nulls, is it really intended behaviour?