SQLite3 - select date range not working
- by iFloh
yet anotherone that gives me grief.
In a SQLite3 DB Select I query for a date range specified in (NSDate *)fromDate to (NSDate *)toDate
const char *sql = "SELECT * FROM A, B WHERE A.key = B.key AND A.date between ? and ?";
After opening the DB I run the query in Objective-C as follows:
NSDateFormatter *tmpDatFmt = [[[NSDateFormatter alloc] init] autorelease];
[tmpDatFmt setDateFormat:@"dd-MM-yyyy"];
sqlite3_stmt *stmt;
if(sqlite3_prepare_v2(db, sql, -1, &stmt, NULL) == SQLITE_OK) {
NSLog(@"From %s to %s;", [[tmpDatFmt stringFromDate:fromDate] UTF8String], [[tmpDatFmt stringFromDate:toDate] UTF8String]);
sqlite3_bind_text(stmt, 1, [[tmpDatFmt stringFromDate:fromDate] UTF8String], -1, SQLITE_STATIC); // first '?'
sqlite3_bind_text(stmt, 2, [[tmpDatFmt stringFromDate:toDate] UTF8String], -1, SQLITE_STATIC); // second '?'
while(sqlite3_step(stmt) == SQLITE_ROW) {
NSLog(@"Success");}
In the database I have several records that match the date range:
12-04-2010 = in seconds 1271059200
13-04-2010 = in seconds 1271145600
13-04-2010 = in seconds 1271152800
14-04-2010 = in seconds 1271267100
When I run it the first NSLog shows
From 2010-04-01 to 2010-04-30
my problem is the records are not selected (no "Success" shows in the log) and I don't understand why.
earlier I had miscalculated the dates 2 days later as
14-04-2010 = in seconds 1271232000
15-04-2010 = in seconds 1271318400
15-04-2010 = in seconds 1271325600
16-04-2010 = in seconds 1271439936
These dates worked fine (4 x "Success in the log). I am puzzled ...
