 Sum php array (created from mysql results) depending on mysql values in another mysql column
By : Mateusz Jałowiec
Date : March 29 2020, 07:55 AM
Any of those help You are going about it wrong. You can get the sum through MySql statement itself. Use the aggrgate function sum along with group by clause. code :
SELECT DebitAccount,sum(Account) from 2_1_journal group by DebitAccount
$query = " SELECT DebitAccount,sum(Account) as Total from 2_1_journal group by DebitAccount";
$sql = $db->prepare($query);
$sql->execute();
$data = $sql->fetchAll(PDO::FETCH_ASSOC);
foreach($data as $result){
if(strlen($result['Total']) > 0 ) {
echo "DebitAccount ". $result['DebitAccount']. "Total is: ". $result['Total']. "<br>";
print_r (array_sum($result));
}
}
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Cannot access data from mysql table using object oriented style of php-mysql
By : tkvalo
Date : March 29 2020, 07:55 AM
this will help Answering my own question here.
I had commented $username and $password.
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 How to add auto increment column to csv Storage Engine type mysql table?
By : dash
Date : March 29 2020, 07:55 AM
it should still fix some issue The CSV storage engine also does not support indexes, so it would cause incredibly bad performance if you wanted to write a trigger to calculate the next id by SELECT MAX(id)+1... because every row insert would cause a table-scan. If you need an auto-increment column, you must convert the table to InnoDB while adding the auto-increment column. code :
ALTER TABLE MyTable
ADD COLUMN id BIGINT AUTO_INCREMENT PRIMARY KEY FIRST,
ENGINE=InnoDB;
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 Open source column-oriented storage engine for PostgreSQL?
By : o.O
Date : March 29 2020, 07:55 AM
around this issue Citus Data has developed an open source columnar store extension for PostgreSQL. It is available under the Apache License v2.0. It supports PostgreSQL 9.3 and higher. First, creation the extension and a foreign server:
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mysql - is there a tool that can show a live log of all the sql commands the mysql engine receives?
By : Nabhan Nazar
Date : March 29 2020, 07:55 AM
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code :
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