I have taken to this data that are the same but presented only one here
now I want to get text
from last row
$sql_query = $connection->query("SELECT DISTINCT `sent_by`, `sent_to` FROM `chat` WHERE `sent_by` = '1' OR `sent_to` = '1'");
if($sql_query->num_rows > 0) {
while ($fetch_data = $sql_query->fetch_array(MYSQLI_ASSOC)) {
if($fetch_data["sent_by"] == 1) {
echo $fetch_data["sent_to"]. " TEXT: ". $fetch_data["text"]. </br>";
} else {
echo $fetch_data["sent_by"]. " TEXT: ". $fetch_data["text"]. </br>";
}
}
}
Database structure:
Sorry for my bad english
UPDATED
If you have field id
as auto increment field, then you can get the last row with this SQL query:
SELECT DISTINCT `sent_by`, `sent_to`, `id`, `text` FROM `chat` WHERE `sent_by` = '1' OR `sent_to` = '1' ORDER BY `id` DESC LIMIT 1
So change this:
$sql_query = $connection->query("SELECT DISTINCT `sent_by`, `sent_to` FROM `chat` WHERE `sent_by` = '1' OR `sent_to` = '1'");
on this:
$sql_query = $connection->query("SELECT DISTINCT `sent_by`, `sent_to`, `id`, `text` FROM `chat` WHERE `sent_by` = '1' OR `sent_to` = '1' ORDER BY `id` DESC LIMIT 1");
In this new query you sort all results by the value of id
field in descending order.
If you will remove DISTINCT
from your query, you can remove also id
from SELECT list in your query.
删除DISTINCT,并仅创建查询
$sql_query = $connection->query("SELECT sent_by, sent_to FROM chat WHERE sent_by = '1' OR `sent_to` = '1'");
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.