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Salesforce SOQL query not returning rows when LastModifiedDate is compared to two dates

and thanks for taking the time to look at my post.

I am trying to retrieve a list of contacts modified between two dates (LastModifiedDate >= Date1 AND LastModifiedDate <= Date2). When I query I receive 0 rows. If I take out ONLY the second part (LastModifiedDate <= Date2) I receive many.

Here is my code and the debug log - first with the two dates:

DateTime myDate = DateTime.parse('10/05/2011 00:00 AM');
DateTime myLastDate = DateTime.valueOf('2012-02-7 05:04:25');
System.debug('the first date:' + String.valueOf(myDate) + ' and the last date: ' + String.valueOf(myLastDate));
List<Contact> cList = [select id, FirstName, LastName, LastModifiedDate  FROM Contact WHERE Email <> '' AND Email <> null AND LastModifiedDate >= :myDate and lastModifiedDate <= :myLastDate];
system.debug('num cons' + cList.size());

debug 

19:19:14.042 (42468000)|USER_DEBUG|[3]|DEBUG|the first date:2011-10-05 00:00:00 and the last date: 2012-02-07 05:04:25
19:19:14.042 (42478000)|SYSTEM_METHOD_EXIT|[3]|System.debug(ANY)
19:19:14.042 (42682000)|SOQL_EXECUTE_BEGIN|[4]|Aggregations:0|select id, FirstName, LastName, LastModifiedDate FROM Contact  WHERE  Email <> '' AND Email <> null  AND LastModifiedDate >= :myDate and lastModifiedDate <= :myLastDate
19:19:18.055 (4055043000)|SOQL_EXECUTE_END|[4]|Rows:0

and now with one date

DateTime myDate = DateTime.parse('10/05/2011 00:00 AM');
DateTime myLastDate = DateTime.valueOf('2012-02-7 05:04:25');
System.debug('the first date:' + String.valueOf(myDate) + ' and the last date: ' + String.valueOf(myLastDate));
List<Contact> cList = [select id, FirstName, LastName, LastModifiedDate  FROM Contact WHERE  Email <> '' AND Email <> null   AND LastModifiedDate >= :myDate ];
system.debug('num cons' + cList.size());

debug:

19:20:55.039 (39038000)|USER_DEBUG|[3]|DEBUG|the first date:2011-10-05 00:00:00 and the last date: 2012-02-07 05:04:25
19:20:55.039 (39045000)|SYSTEM_METHOD_EXIT|[3]|System.debug(ANY)
19:20:55.039 (39249000)|SOQL_EXECUTE_BEGIN|[4]|Aggregations:0|select id, FirstName, LastName, LastModifiedDate FROM Contact   WHERE  Email <> '' AND Email <> null  AND LastModifiedDate >= :myDate
19:21:06.555 (11555339000)|SOQL_EXECUTE_END|[4]|Rows:21784

Any suggestions are welcome.

Solution

  • It just started working without any changes on my end.

    Thanks everyone for your help.