I want to select the data between two dates and I wrote the query as follows:
SELECT *
FROM hospital_details
WHERE expirydate BETWEEN '03/13/2015' AND '03/18/2015'
But it also displays the results of 03/17/2016
How can I solve it?
You could write single syntax.
SELECT * FROM hospital_details WHERE ExpiryDate BETWEEN '$Date' AND '$b';
The active record where function will take an associative array;
$array = array('expirydate >= ' => $Date, 'expirydate <= ' => $b);
$this->db->where($array);
or a custome string;
$where = "expirydate > ='$Date' AND expirydate < ='$b'";
$this->db->where($where);
Obviously, make sure your variables are in the right format.
Active record docs here
Related
I need help optimizing the below querys for a recurrent calendar i've built.
if user fail to accomplish all task where date
This is the query i use inside a forech which fetched all dates that the current activity is active.
This is my current setup, which works, but is very slow.
Other string explained:
$today=date("Y-m-d");
$parts = explode($sepparator, $datespan);
$dayForDate2 = date("l", mktime(0, 0, 0, $parts[1], $parts[2], $parts[0]));
$week2 = strtotime($datespan);
$week2 = date("W", $week2);
if($week2&1) { $weektype2 = "3"; } # Odd week 1, 3, 5 ...
else { $weektype2 = "2"; } # Even week 2, 4, 6 ...
Query1:
$query1 = "SELECT date_from, date_to, bok_id, kommentar
FROM bokningar
WHERE bokningar.typ='2'
and date_from<'".$today."'";
function that makes the foreach move ahead one day at the time...
function date_range($first, $last, $step = '+1 day', $output_format = 'Y-m-d' )
{
$dates = array();
$current = strtotime($first);
$last = strtotime($last);
while( $current <= $last ) {
$dates[] = date($output_format, $current);
$current = strtotime($step, $current);
}
return $dates;
}
foreach:
foreach (date_range($row['date_from'], $row['date_to'], "+1 day", "Y-m-d")
as $datespan)
if ($datespan < $today)
Query 2:
$query2 = "
SELECT bok_id, kommentar
FROM bokningar b
WHERE b.typ='2'
AND b.bok_id='".$row['bok_id']."'
AND b.weektype = '1'
AND b.".$dayForDate2." = '1'
AND NOT EXISTS
(SELECT t.tilldelad, t.bok_id
FROM tilldelade t
WHERE t.tilldelad = '".$datespan."'
AND t.bok_id='".$row['bok_id']."')
OR b.typ='2'
AND b.bok_id='".$row['bok_id']."'
AND b.weektype = '".$weektype2."'
AND b.".$dayForDate2." = '1'
AND NOT EXISTS
(SELECT t.tilldelad, t.bok_id
FROM tilldelade t
WHERE t.tilldelad = '".$datespan."'
AND t.bok_id='".$row['bok_id']."')";
b.weektype is either 1,2 or 3 (every week, every even week, every uneven week)
bokningar needs INDEX(typ, date_from)
Instead of computing $today, you can do
and date_from < CURDATE()
Are you running $query2 for each date? How many days is that? You may be able to build a table of dates, then JOIN it to bokningar to do all the SELECTs in a single SELECT.
When doing x AND y OR x AND z, first add parenthes to make it clear which comes first AND or OR: (x AND y) OR (x AND z). Then use a simple rule in Boolean arithmetic to transform it into a more efficient expression: x AND (y OR z) (where the parens are necessary).
The usual pattern for EXISTS is EXISTS ( SELECT 1 FROM ... ); there is no need to list columns.
If I am reading it correctly, the only difference is in testing b.weektype. So the WHERE can be simply
WHERE b.weektype IN ('".$weektype2."', '1')
AND ...
There is no need for OR, since it is effectively in IN().
tilldelade needs INDEX(tilldelad, bok_id), in either order. This should make the EXISTS(...) run faster.
Finally, bokningar needs INDEX(typ, bok_id, weektype) in any order.
That is a lot to change and test. See if you can get those things done. If it still does not run fast enough, start a new Question with the new code. Please include SHOW CREATE TABLE for both tables.
I need to find max date from a table(mysql database). I am storing my date as varchar.
select max(completion_date) from table_name returns wrong value.
http://sqlfiddle.com/#!9/c88f6/3
Assuming the date time format you have in your fiddle (e.g. '12/19/2012 05:30 PM') then:
select max(STR_TO_DATE(completion_date, '%m/%d/%Y %l:%i %p')) from test;
http://sqlfiddle.com/#!9/c88f6/15
It's unclear if you want to factor the time into your rankings or just the date. This example accounts for time too, but you can remove that part of the formatter if desired.
I am not sure why you would want to keep it as varchar not date.
But this will work for varchar:
SELECT completion_date
FROM test
ORDER BY STR_TO_DATE(completion_date, '%m/%d/%Y') DESC LIMIT 1;
http://sqlfiddle.com/#!9/c88f6/10
<?php
// Store dates
$dates = array();
// Loop through and transfer the result set
foreach ($result as $row => $data) {
$dates[$row] = $data['date'];
}
// Sort the array
usort( $dates, "date_sort_function" );
// Max is last date in array.
foreach ($dates as $date) {
$max = $date;
}
?>
Well, something like that. It is a php script and all you have to provide is the sorting function which returns 0 if equal, 1 if older, and -1 if earlier.
Hi how can I do a query like this in zf2 with zend\db\sql?
Query:
SELECT * FROM table WHERE field = $field AND data > SUBDATE(NOW(), INTERVAL 1 DAY)
In ZF2
$select = $this->sql->select();
$select->from(self::MYTABLE)
->where(array('fiels' => $field))
->where(array('data > ' => 'SUBDATE(NOW(), INTERVAL '.$lifetime.' SECOND'));
$statement = $this->sql->prepareStatementForSqlObject($select);
return $statement->execute()->current();
change the line
->where(array('data > ' => 'SUBDATE(NOW(), INTERVAL '.$lifetime.' SECOND'));
to
->where(array('data > ?' => 'SUBDATE(NOW(), INTERVAL '.$lifetime.' SECOND'));
From the code snippet, it's seen you had missed the place holder for the parameter(?), include a question mark, I had mentioned the existing line of code and the modified code for quick reference
There's no parameter there so it doesn't need to be an array. Assuming you know $lifetime is a safe, integer value, try:
->where('data > SUBDATE(NOW(), INTERVAL '.$lifetime.' SECOND)');
I have 2 buttons which execute a post operations and set a hidden variable which is used to set the MySQL query to filter the database according to date
if result = today
$query = "SELECT id,customer_name,CAST( `register_date` AS DATE ) AS dateonly,status,
DATE_FORMAT(book_date, '%m/%d/%y') FROM table WHERE book_date
BETWEEN (CURDATE() - INTERVAL 1 DAY) AND CURDATE()";
if result = week
$query = "SELECT id,customer_name,CAST( `register_date` AS DATE ) AS dateonly,status,
DATE_FORMAT(book_date, '%m/%d/%y') FROM table
WHERE book_date BETWEEN (CURDATE() - INTERVAL 7 DAY) AND CURDATE()";
I then want to use something like
$result=mysql_query($query);
while ($mytable=mysql_fetch_array($result))
{
loop and display all the information in array in a table
}
But I need the red bean equivalent of this.
The easiest way is to just paste the $query inside the sql function:
$results=R::getAll($query);
foreach($results as $row){
echo $row['id'];
}
The next way is to manually build the query.... which may just make it look sloppier in my opinion:
$results=R::$f->begin()->select('id, customer_name, CAST( register_date AS DATE ) AS dateonly,status, DATE_FORMAT(book_date, '%m/%d/%y')')->from('table')->where('book_date BETWEEN (CURDATE() - INTERVAL 1 DAY) AND CURDATE())->get();
The final way is to grab results via redbean and handle them manually:
$results=R::find('table','book_date BETWEEN (CURDATE() - INTERVAL 7 DAY) AND CURDATE()');
Then loop through the results, configuring data along the way in php.
I always use this when I have to access a lot of data from mysql:
while ($row = mysqli_fetch_array($query)) { #converts query into array
$array[] = $row;
}
$array will be a multidimensional array. $array[x][column_name] will get you your data, x being the row which you want to access it from. Hope this helped.
I need to retrieve data from within a specific date range.Anybody can help me to create a query to getting the information within date range 12-12-2009 to 12-15-2009 from a mysql table.(including 12 and 15)
SELECT * FROM foo WHERE timestamp BETWEEN "2009-12-12" AND "2009-12-15"
Use this function in php first
function ChangeDateforDB($inputdate) {
if($inputdate>0) {
$month = substr($inputdate,0,2);
$date = substr($inputdate,3,2);
$year = substr($inputdate,6,4);
$show = $year."-".$month."-".$date;
return $show;
}
}
After that you can use this in query like this in the checking condition,
checkdate >= '".ChangeDateforDB($fromdate)."' and checkdate <= '".ChangeDateforDB($todate)."'
Check this one, you can get the correct answer.
SELECT ... WHERE DATEDIFF('2009-12-15',yourdatefield) <= 3 ...