Split the database by date - mysql

Question

I have large MySQL database on production (14 GB). Sometimes I have to download it and work on it locally. This is of course problem. The database have 10 tables with field "date" and 5 tables without field "date".
Is there any easy way to download it for the last month? 10 tables with condition "data > '2020-07-24'" and full 5 other tables. I would like to dump it into one .sql file and next import it locally.
Unfortunately the database has some relations between 10 tables...

Answer 1

Try this code and its must be to create columns CREATED_DATE with any tables
i hope it will work :)
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https://github.com/engacs/Autobackup-databse-to-GoogleDrive/
<?php
// ini_set('memory_limit', '1024M');
// User home directory (absolute)
$homedir = "backup/"; // If this doesn't work, you can provide the full path yourself
// Site directory (relative)
$sitedir = "";
// Base filename for backup file
$fprefix = "sitebackup-";
// Base filename for database file
$dprefix = "dbbackup-";
// MySQL username
$dbuser = "root";
// MySQL password
$dbpass = "";
// MySQL database
$dbname = "";
// MySQL Host
$host = "localhost";
// Get connection object and set the charset
$conn = mysqli_connect($host, $dbuser, $dbpass, $dbname);
$conn->set_charset("utf8");
// Get All Table Names From the Database
$tables = array();
$sql = "SHOW TABLES";
$result = mysqli_query($conn, $sql);
while ($row = mysqli_fetch_row($result)) {
$tables[] = $row[0];
}
$sqlScript = "";
foreach ($tables as $table) {
// Prepare SQLscript for creating table structure
$query = "SHOW CREATE TABLE $table";
$result = mysqli_query($conn, $query);
$row = mysqli_fetch_row($result);
$sqlScript .= "\n\n" . $row[1] . ";\n\n";
$form_date='2020-08-01'; // Split From Date
$to_date='2020-08-31'; // Split to Date
$query = "SELECT * FROM $table "; //
// if you whant to use Split the database by date
// $query .=" WHERE CREATED_DATE >= DATE(CONCAT_WS('-', '2020', '08', '01')) AND CREATED_DATE < DATE(CONCAT_WS('-', '2020', '08', '31'))"
// $query .=" WHERE CREATED_DATE >= '$form_date' AND CREATED_DATE < '$to_date' ";
$result = mysqli_query($conn, $query);
$columnCount = mysqli_num_fields($result);
// Prepare SQLscript for dumping data for each table
for ($i = 0; $i < $columnCount; $i ++) {
while ($row = mysqli_fetch_row($result)) {
$sqlScript .= "INSERT INTO $table VALUES(";
for ($j = 0; $j < $columnCount; $j ++) {
$row[$j] = $row[$j];
if (isset($row[$j])) {
$sqlScript .= '"' . $row[$j] . '"';
} else {
$sqlScript .= '""';
}
if ($j < ($columnCount - 1)) {
$sqlScript .= ',';
}
}
$sqlScript .= ");\n";
}
}
$sqlScript .= "\n";
}
if(!empty($sqlScript))
{
// Save the SQL script to a backup file
$backup_file_name = $homedir.$dprefix.$dbname . '_' . $uid . '.sql';
$fileHandler = fopen($backup_file_name, 'w+');
$number_of_lines = fwrite($fileHandler, $sqlScript);
fclose($fileHandler);
}

Answer 2

Yes, look at mysqldump's --where option.