How to efficiently load and integrate CSV timestamps into MySQL database using LOAD DATA INFILE option

Question

How to efficiently load and integrate CSV timestamps into MySQL database using LOAD DATA INFILE option

I have a CSV file with timestamps in this specific format:

 timestamp,             day_chan2, day_chan3
01/02/2014 00:00,             9,    2
01/02/2014 00:00,            16,    5

My goal is to import this data into a MySQL database using the LOAD DATA INFILE command.

$query_name = "LOAD DATA INFILE ' "
                                . $file_path . 
                                "' INTO TABLE '"
                                . $this->table_name . 
                                 " ' FIELDS TERMINATED BY '\,' 
                                 LINES TERMINATED BY '\\n' 
                                 IGNORE 1 LINES 
                                 (`time_stamp`,`day_chan2`,`day_chan3`)";

The issue I'm facing now is how to convert the timestamp format into one that MySQL accepts during the import process.

I'm currently stumped on how to properly adjust the timestamp data for querying later on.

php mysql sql csv

Answer 1

Answer №1

Although I have not personally tested this method, you could potentially execute the following code snippet:

$query_name = "LOAD DATA INFILE ' "
                                . $file_path . 
                                "' INTO TABLE '"
                                . $this->table_name . 
                                 " ' FIELDS TERMINATED BY '\,' 
                                 LINES TERMINATED BY '\\n' 
                                 IGNORE 1 LINES 
                                 (@mytimestamp,`day_chan2`,`day_chan3`)
                                 SET time_stamp=STR_TO_DATE(@mytimestamp, '%d/%m/%Y %h:%i');"

You can find examples and further details about this approach in the MySQL documentation:

http://dev.mysql.com/doc/refman/5.1/en/load-data.html

Answer 2

Although I have not personally tested this method, you could potentially execute the following code snippet:

$query_name = "LOAD DATA INFILE ' "
                                . $file_path . 
                                "' INTO TABLE '"
                                . $this->table_name . 
                                 " ' FIELDS TERMINATED BY '\,' 
                                 LINES TERMINATED BY '\\n' 
                                 IGNORE 1 LINES 
                                 (@mytimestamp,`day_chan2`,`day_chan3`)
                                 SET time_stamp=STR_TO_DATE(@mytimestamp, '%d/%m/%Y %h:%i');"

You can find examples and further details about this approach in the MySQL documentation:

http://dev.mysql.com/doc/refman/5.1/en/load-data.html

Answer 3

Answer №2

One effective method to achieve this is by utilizing MySQL's STR_TO_DATE function, particularly based on the details you provided in your comment.

if (!($stmt = $mysqli->prepare("INSERT INTO ". $this->table_name . "(`time_stamp`,`day_chan2`,`day_chan3`) VALUES (STR_TO_DATE(?, 'd/m/y H:M'),?,?)"))) {
    echo "Prepare failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
for ($fields in $data) {
   $stmt->bind_param('i', $fields[0]);
   $stmt->bind_param('i', $fields[1]);
   $stmt->bind_param('i', $fields[2]);
   if (!$stmt->execute()) {
      echo "Execute failed: (" . $stmt->errno . ") " . $stmt->error;
   }
}

Best wishes and feel free to reach out if you require any additional assistance.

Answer 4

One effective method to achieve this is by utilizing MySQL's STR_TO_DATE function, particularly based on the details you provided in your comment.

if (!($stmt = $mysqli->prepare("INSERT INTO ". $this->table_name . "(`time_stamp`,`day_chan2`,`day_chan3`) VALUES (STR_TO_DATE(?, 'd/m/y H:M'),?,?)"))) {
    echo "Prepare failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
for ($fields in $data) {
   $stmt->bind_param('i', $fields[0]);
   $stmt->bind_param('i', $fields[1]);
   $stmt->bind_param('i', $fields[2]);
   if (!$stmt->execute()) {
      echo "Execute failed: (" . $stmt->errno . ") " . $stmt->error;
   }
}

Best wishes and feel free to reach out if you require any additional assistance.

How to efficiently load and integrate CSV timestamps into MySQL database using LOAD DATA INFILE option

Answer №1

Answer №2

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