i have a table like :
.............................
id | Sun | Mon | Tue | Wed |
.............................
1 | 0 | 1 | 1 | 1 |
.............................
Now i am getting all the column name from this query:
DB::getSchemaBuilder()->getColumnListing('weak');
it returning me the array of all columns name
but i want those column name which have the 1 value how can i get those column which have 1 value in laravel..any anyone please help me related this ??
You can use array_keys() with the second parameter:
$object = DB::table('weak')->first();
$columns = array_keys((array)$object, 1);
The result will be:
['Mon', 'Tue', 'Wed']
I think you need to build a Custom query using the IF function
SELECT
(IF(table.Sun == 1) table.Sun,)
(IF(table.Mon == 1) table.Mon,)
......
table.id
FROM table
Related
I'm probably overlooking a fairly simple way of doing this; perhaps someone has an idea of how to make this easy with limited looping and without an excessively long query. Let's say I have a MySQL table with data like this: (There's 12 months, and could be maybe 10 different possible grades). I'll query out just the results for a given user_id and year.
+----+---------+------+-------+-------+-------+
| id | user_id | year | month | grade | value |
+----+---------+------+-------+-------+-------+
| 1 | 1 | 2021 | Jan | A | 95 |
+----+---------+------+-------+-------+-------+
| 2 | 2 | 2021 | Jan | D | 75 |
+----+---------+------+-------+-------+-------+
| 3 | 2 | 2021 | Feb | F | 45 |
+----+---------+------+-------+-------+-------+
I want to be able to query the data and put it into a multi-dimensional associative PHP array.
Essentially, so I can access the data like this:
echo $month_value['Jan']['D']; // Should give me 75
echo $month_value['Feb']['F']; // Should give me 45
Figured out a simple method that works for me:
$sql_retrieve = $con->prepare("SELECT month, grade, value
FROM table
WHERE user_id = ? AND year = ?;");
$bind_process = $sql_retrieve->bind_param('ii',$user_id,$year);
$sql_retrieve->execute();
$result = $sql_retrieve->get_result();
$month_values = []; // initialize array
if($result->num_rows > 0 ){ // If there are results
while($row=$result->fetch_assoc()){
$month_values[$row["month"]][$row["grade"]] = $row["value"]; // add to array
} // end while
} // end of if num_rows > 0
print_r($month_values); // Example
echo 'Value: '.$month_values['Jan']['D'];
This then provides the MySQL results into a multi-dimensional associative PHP array, so they can be referenced as such.
Table example
id | name | value | date
--------------------------------------------
1 | abc | 20 | 2018-01-26
1 | abc | 24 | 2018-01-27
1 | abc | 25 | 2018-01-28
1 | abc | 30 | 2018-01-29
I know how to fetch data from 28th Jan or today. But I need some way to show values of two dates in two columns. Is it possible in one mysql query?
Like this
name | value_today | value_pre
---------------------------------------
abc | 30 | 25
You can achieve this using the case. This query returns the today's value and previous date value:
SELECT
id, name,
Sum(Case When date = CURDATE()
Then value Else 0 End) TodaySum,
Sum(Case When (date = CURDATE()-1)
Then value Else 0 End) PreviousSum
FROM tbl1
group by id, name
Here's a hypothetical query that would do it.
SELECT t1.value AS value_today,(SELECT t2.value FROM table AS t2 WHERE t2.date=2018-01-29 ) AS value_pre
FROM table AS t1 WHERE t1.date=2018-01-28
I use of codeigniter(php) and have a table in database i want select query equal words no whatever it looks like it is.
For example I have the following table in the database MySQL:
I want get row that have num 2 of Active column.what do i do?
+----------------------------------------+
| Name Active Insert_Time |
+----------------------------------------+
| mon 2222 1481203712 |
| tue 2 1481202788 |
| wed 222 1481202581 |
| thu 22 1479902588 |
+----------------------------------------+
I've tried like this:
$search_term = $this->input->post('search');
$this->db->select('Active, Name', FALSE);
$this->db->where('Active LIKE', '%'.$search_term_num.'%');
$query = $this->db->get('submit_house');
this query give me all rows, but I'd just row 2
Use $this->db->get_where():
$query = $this->db->get_where('database_table', array('Active' => 2));
Source:
https://www.codeigniter.com/userguide3/database/query_builder.html
i already done everything to remove this duplicity on the database
On selecting a checkbox on the sectio "Bairros" i utilized as Array
for($m=0; $m<count($_POST["bairros"]); $m++){// LOOP 1
$pesquisar=($_POST["bairros"][$m]);
//Copy bairros(Array) and esporte (POST)
$query = "SELECT DISTINCT * FROM cadastro WHERE
(esporte1 = '".$_POST["esportes"]."' OR
esporte2 = '".$_POST["esportes"]."' OR
esporte3 = '".$_POST["esportes"]."' OR
esporte4 = '".$_POST["esportes"]."')
AND
(bairro1 = '".$pesquisar."' OR
bairro2 = '".$pesquisar."' OR
bairro3 = '".$pesquisar."' OR
bairro4 = '".$pesquisar."')
AND
ativarAparecer='sim' ORDER BY nomeCompleto ASC LIMIT 20";
$esporte= new consultar();
$esporte->executa($query);
//Loops
for($l=0; $l<$esporte->nrw; $l++){ //LOOP 2
echo $esporte->data["nomeCompleto"]."<br />";
$esporte->proximo();
} //close LOOP2
} //close LOOP1
Detail: this function object oriented, I believe that i'm doing something wrong at SQL or MYSQL, perhaps something is missing there.
SELECT DISTINCT *
Stop There. DISTINCT * can do what? Duplicate of what? it cant do that. Give it a field name to see unique values.
For example
SELECT DISTINCT nomeCompleto
Let's break this down. The DISTINCT clause will return unique sets based on the selected columns.
Let's say you have a table:
a | b | c
=========
1 | 2 | 3
1 | 1 | 3
1 | 2 | 4
Now if you SELECT DISTINCT a FROM table, you would get:
1
but if you SELECT DISTINCT a, b FROM table, you would get:
a | b
=====
1 | 2
1 | 1
That's because {1,2} is different from {1,1}, even though the a column is the same between those two sets.
Obviously, doing SELECT DISTINCT * FROM table would give you the original table because it uses all three columns as a "composition" of the unique set. If we amended the table to look like this:
a | b | c
=========
1 | 2 | 3
1 | 1 | 3
1 | 2 | 4
1 | 2 | 3
Then your result of SELECT DISTINCT * FROM table would give:
a | b | c
=========
1 | 2 | 3
1 | 1 | 3
1 | 2 | 4
because of the duplicate result set of {1, 2, 3}. However, since most tables have an auto-incrementing identifier as the primary key, there is almost always no difference between SELECT * and SELECT DISTINCT *.
Perhaps you're looking to GROUP BY a certain column?
How would I be using GROUP this in my script? Column that there are several equal records are this bairro, bairro2, bairro3, bairro4. Inside it is in numbers
bairro1 | bairro2 | bairro3 | bairro4
14 | 14 | 15 | 27
34 | 15 | 14 | 30
27 | 45 | 12 | 14
I have an sql statement that will insert a value to the first empty cell. And if I ran the php script again, then it inserts into the next null cell etc.
Problem: I also want to find out the ID of that row, and value of another column in that row. In the Mysql table below, I want a value inserted in the first ‘null’ of COLUMN A, and also know the id and value in COLUMN B corresponding to that (ie id=3 and COLUMN B= 11).
My_TABLE
+---------+--------------+-------------+
| ID | COLUMN A | COLUMN B |
+---------+--------------+-------------+
| 1 | 6 | 78 |
| 2 | 7 | 90 |
| 3 | NULL | 11 |
| 4 | NULL | 5 |
| 5 | NULL | 123 |
+---------+--------------+-------------+
The following sql statement in PHP script will make it possible to insert value to the first empty cell in COLUMN A:
UPDATE My_TABLE
SET COLUMN A = 83
WHERE COLUMN A IS NULL
LIMIT 1;
Result will be:
+----+----------+------------+
| ID | COLUMN A | COLUMN B |
+----+----------+------------+
| 1 | 6 | 78 |
| 2 | 7 | 90 |
| 3 | 83 | 11 |
| 4 | NULL | 5 |
| 5 | NULL | 123 |
+----+----------+------------+
I also want to have an sql script that will print within PHP (echo) the values of ID and COLUMN B values corresponding to the first COLUMN A null value (ie ID= 3; COLUMN B= 11).
fetch the row by condition in this case you will have ID and COLUMN B
select *
from My_TABLE
where COLUMN A IS NULL
order by id
limit 1
Update by ID the selected row:
update My_TABLE
set COLUMN A = :SOME_VALUE
where ID = :ID_FROM_FETCH
Not sure if this case will fit what you are questioning.
mysqli_insert_id
From this function I'm pretty sure you will able to write the script for what you need.
Note* If it fits what you need, please read the warning as I'm not
sure if it will deprecated from the latest PHP version. Kindly take
note.