I want to show data,based on previous week.
my query for pg-admin is
"SELECT * FROM event WHERE datetime BETWEEN NOW()-INTERVAL '6 DAYS' AND NOW()"
it is working fine in pg-admin editor and shows me correct data,but when i implement this query to php code it doesn't show the required result.
my php code is
$queryStr ="SELECT * FROM event WHERE datetime BETWEEN NOW()-INTERVAL '6 DAYS' AND NOW()";
$result = pg_query($conn,$queryStr);
if (!$result) {
echo "An error occurred in query.\n";
exit;
}
$result = pg_fetch_assoc($result);
return $result;
it shows me only one row any solution?
use something like below :
while ($row = pg_fetch_assoc($result))
{
echo $row['id'];
echo $row['author'];
echo $row['email'];
}
Related
I get result from first query correctly However, when I want to use them in second query in WHERE condition I get query error 1064. If I remove WHERE it will work fine. Also,when I try to echo variables inside while in second query code it will print.the variables will not work only in WHERE in second query
$queryDate = "SELECT date , time from DATES where ID = $ID";
$result = mysqli_query($connection, $queryDate);
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
$date = $row['date'];
$time = $row['time'];
}
}
$queryCom = "SELECT * from DATES, BOOKING where dates.time = $time and booking.IDofFullDate= $date";
$result1 = mysqli_query($connection, $queryCom);
if (!$result1)
{
die("Query Faile". mysqli_errno($connection));
}
if ($result1->num_rows >0) {
echo $date;
echo $time;
}
on your second query try this below:
$queryCom = "SELECT * from DATES as dates, BOOKING as booking where dates.time = $time and booking.IDofFullDate= $date";
I am trying to display certain values through GROUP_CONCAT, and GROUP BY, yet only the groups are showing when I test it out, and the other values don't.
function events_calendar() {
global $connection;
mysqli_select_db($connection);
$query = ("SELECT month, GROUP_CONCAT(start_date) as data FROM events GROUP BY month");
$result = $connection->query($query);
$str = "";
while ($row = $result->fetch_assoc()) {
echo $row['month'];
echo $row['start_date'];
}
return $str;
}
The month values show up, but the start_date values don't.
The problem is the PHP. Try replacing:
echo $row['start_date'];
with:
echo $row['data'];
You need to use the column alias that you assigned in the SELECT.
I am displaying a list of months and years from the database like this into a drop-down menu:
$stmt = $link->prepare("SELECT `b_date` FROM `summary` GROUP BY YEAR(`b_date`), MONTH(`b_date`)");
$stmt->execute();
$result = $stmt->get_result();
$numRows = $result->num_rows;
if($numRows > 0) {
while($row = $result->fetch_assoc()) {
$month = date('F Y', strtotime($row['b_date']));
echo "<option value='{$month}'>{$month}</option>";
}
}
When the user clicks on a choice, it redirects to another page like:
mypage.com/results.php?date=
The problem is that I don't know what to set the value as. In the current code the url produced looks like:
php?date=April%202017
That obviously isn't ideal. And the point is that on the results page I need to show results for the month that was selected. So, I need that query string to query the database.
You can put to select value something like 05-2017:
while($row = $result->fetch_assoc()) {
$month = date('m-Y', strtotime($row['b_date']));
echo "<option value='{$month}'>{$month}</option>";
}
And then get it with DateTime object:
$date = DateTime::createFromFormat('m-Y', $_GET['date']);
And then you can format this object to any format you want:
$formated_date = $date->format('Y-m-d');
You can chose another format, but I think you understand my idea.
UPD. To execute all record on this month try to use this code:
$date = DateTime::createFromFormat('m-Y', $_GET['date']);
$stmt = $link->prepare("SELECT * FROM `summary` WHERE YEAR(`b_date`) = :year AND MONTH(`b_date`) = :month");
$stmt->bindParam(':month', $date->format('m'));
$stmt->bindParam(':year', $date->format('Y'));
$stmt->execute();
$result = $stmt->get_result();
I think its working but maybe need to fix.
Change like this (use urlencode()):-
$month = date('m-Y', strtotime($row['b_date']));
echo "<option value='".urlencode($month)."'>{$month}</option>";
Now on next page check $_GET['date'] and see it's coming proper or not?
if it come proper in format like m-Y then split it with - and now you get month and year separately. Use them in your query or wherever you want.
Query need to be like something:-
$_GET['date'] = '04-2017';
$date_array = explode('-',$_GET['date']);
$month = $date_array[0];
$year = $date_array[1];
"SELECT * FROM summary WHERE MONTH(<you date column name>) = $month";
U can format data in select (postgres, mysql...)
SELECT TO_CHAR('MM-YYYY', b_date) AS formated_date FROM summary GROUP BY TO_CHAR('MM-YYYY', b_date
I got the following problem. I got a mysql field which is type "text" and there are many birthday dates in it.
I want to print the dates out and sort it in my way of date format. I can't change the type in the database because it's related to some user profile value fields.
The value's thats in the database are such this:
1978-12-31 23:59:59
This is my query:
$result = mysql_query("SELECT a.value, b.username from yrt6h_community_fields_values a join yrt6h_users b on a.user_id = b.id where a.field_id = 3 order by a.value;");
And this my example php file:
<table>
<tr>
<td>User:</td>
<td>Datum:</td>
</tr>
<?php
while($row = mysql_fetch_array($result)){
echo '<tr>';
echo '<td>';
echo $row['username'] . ' : ';
echo '</td>';
echo '<td>';
echo $row['value'];
echo '</td></tr>';
}
?>
</table>
I tried all of the date format functions of mysql, but then i got nothing.
For example I tried this:
mysql_query("SELECT str_to_date(a.value, '%d.%m.%Y'), ...
or
mysql_query("SELECT str_to_date(date_format(a.value, '%Y.%m.%d') %d.%m.%Y), ...
But I do that, the echo of the date is empty. Theres nothing to print out anymore. But why? Even if I put this query directly in the database I got NULL for the birthday value.
why dont you try to do it with php like -
echo date('d-m-Y', strtotime($yourDate));//the first paramete is the date format you want and the second is the value you are getting from database.
Reference for more understanding, example and formats.
Almost there!
I would suggest that you first get the data from the db with
mysql_query("SELECT str_to_date(a.value, '%d.%m.%Y')
Then
while($row = mysql_fetch_array($result))
{
$date = $row['date'];
$time = strtotime($date);
$formattedDate = date('Y-m-d', $time);
}
echo $formattedDate ;
Does that make senese?
Have you tried the PHP Date() function?
You could do something like so:
If you're looking for all records that match a specific date:
$timestamp = date('Y-m-d H:i:s'); //get current timestamp
mysql_query("SELECT * FROM `table` WHERE `timestamp` = '$timestamp'");
Or -- If you're trying to select/order by Timestamp:
mysql_query("SELECT * FROM `table` ORDER BY `timestamp`"); //select all order by timestamp
you can use mysql "cast" function.
rewrite the query in such a way:
"SELECT cast(a.value as DATETIME) new_dob,str_to_date(a.value, '%d.%m.%Y') dob from table_nm where cond"
I have searched and searched for ways to do this but have found very limited information.
I have a MySQL table 'msgdb' that contains a field 'ttime' that is in the format double(25,8) (example row = 1352899856.95249200).
I need to routinely cleanup the table by removing any rows where the field 'ttime' is <= today's date -5 days.
These are the only two lines of code I could find related to double to time conversion but cannot get either to work.
SELECT ADDDATE(ADDDATE(ADDDATE('1899-12-31 00:00:00',FLOOR(ttime)), INTERVAL -1 DAY),INTERVAL(MOD(ttime,1)*86400)SECOND) AS TrueDate FROM msgdb
select date('1899-12-31 00:00:00'+ INTERVAL ttime * 24*3600 SECOND) as date from msgdb
I have tried first to display any rows that match the criteria using the code below, before I started using DELETE FROM to make sure I'm getting the correct results.
$query = "select date('1899-12-31 00:00:00'+ INTERVAL ttime * 24*3600 SECOND) as date from msgdb";
$result = mysql_db_query ($dbname, $query, $link);
while($row = mysql_fetch_array($result)) {
echo $row['date'];
echo '<br>';
}
and also
$query = "SELECT ADDDATE(ADDDATE(ADDDATE('1899-12-31 00:00:00',FLOOR(ttime)), INTERVAL -1 DAY),INTERVAL(MOD(ttime,1)*86400)SECOND) AS TrueDate FROM msgdb";
$result = mysql_db_query ($dbname, $query, $link);
while($row = mysql_fetch_array($result)) {
echo $row['TrueDate'];
echo '<br>';
}
but both are returning nothing.
UPDATE: Ok so by using this code:
$query = "select ttime from msgdb";
$result = mysql_db_query ($dbname, $query, $link);
while($row = mysql_fetch_array($result)) {
echo date('m-j-Y, H:i:s', $row[0]);
echo '<br>';
}
I am able to see it convert 'ttime' field from the stored value of 1352899856.95249200 to 11-14-2012, 07:30:56.
So how would I DELETE from the table all rows where ttime is <=now - 5 days?
Figuring out which records have a date before a point in time should be easy:
DELETE FROM table WHERE ttime <= DATE_SUB(NOW(), INTERVAL 5 DAY);
It might also be better to use UTC_TIMESTAMP() if you store all your times in UTC, which is the only sane way to do it.