How to use NOT IN or Not Exist custom in Datetime?

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How to use NOT IN or Not Exist custom in Datetime?

ppc493

SSC Veteran

Points: 290
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December 10, 2012 at 10:53 am

#267297

i use 2 table, i want first table not data in table two of show on to database.
Ex.
"filesTA"
EmpNo | ChkDate
00001 | 2012-10-01 00:00:00.000
00001 | 2012-10-02 00:00:00.000
00001 | 2012-10-03 00:00:00.000
00001 | 2012-10-04 00:00:00.000
00001 | 2012-10-05 00:00:00.000
"SalaryDay2"
sEmpNo | sDate
00001 | 2012-10-01 00:00:00.000
00001 | 2012-10-02 00:00:00.000
When i select datetime between 2012-10-01 and 2012-10-05
i need output:
sEmpNo | sDate
00001 | 2012-10-03 00:00:00.000
00001 | 2012-10-04 00:00:00.000
00001 | 2012-10-05 00:00:00.000
this code:
SELECT tf.EmpNo,tf.ChkDate
FROM filesTA tf
WHERE tf.ChkDate NOT IN(
SELECT sd2.sDate
FROM SalaryDay2 sd2
WHERE Convert(nvarchar(10),sd2.sDate,126) Between '2012-10-01' and '2012-10-05'
)
please help me. thanks you for you time. 🙂

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Eugene Elutin SSC Guru Points: 59322 More actions · Answer 1

Hope that following should help you:

SELECT tf.EmpNo, tf.ChkDate

FROM filesTA tf

WHERE tf.ChkDate BETWEEN '20121001' AND '20121005'

AND NOT EXISTS (SELECT 1 FROM SalaryDay2 sd2

WHERE sd2.sEmpNo = tf.EmpNo

AND sd2.sDate = tf.ChkDate)

Please note:

1. Never convert datetime to anything else (varchar or int) for datetime comparison.

If your SalaryDay2.sDate is varchar, convert it to datetime instead (or it will be properly implicitly converted if it's in ISO)

2. Note the format I've used - it's one of possible ISO variations: Year then Month then Day. You can use '1 Oct 2012', it will also work perfectly as month is explicitly known.

3. Used BETWEEN will only work properly if your datetime values do not contain time part. Otherwise, you should use greater-than-or-equal-to and less-than in WHERE clause for datetime filtering:

WHERE tf.ChkDate >= '20121001' AND tf.ChkDate < '20121006' --note the "to" boundary...

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ppc493 SSC Veteran Points: 290 More actions · Answer 2

Eugene Elutin (12/10/2012)
Hope that following should help you:
SELECT tf.EmpNo, tf.ChkDate
FROM filesTA tf
WHERE tf.ChkDate BETWEEN '20121001' AND '20121005'
AND NOT EXISTS (SELECT 1 FROM SalaryDay2 sd2
WHERE sd2.sEmpNo = tf.EmpNo
AND sd2.sDate = tf.ChkDate)
Please note:
1. Never convert datetime to anything else (varchar or int) for datetime comparison.
If your SalaryDay2.sDate is varchar, convert it to datetime instead (or it will be properly implicitly converted if it's in ISO)
2. Note the format I've used - it's one of possible ISO variations: Year then Month then Day. You can use '1 Oct 2012', it will also work perfectly as month is explicitly known.
3. Used BETWEEN will only work properly if your datetime values do not contain time part. Otherwise, you should use greater-than-or-equal-to and less-than in WHERE clause for datetime filtering:
WHERE tf.ChkDate >= '20121001' AND tf.ChkDate < '20121006' --note the "to" boundary...

Oh, thanks so much! i'm learnings this news. 😛