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How to avoid white spaces being created while importing data from csv file to MySQL table


By : Maxime Brd
Date : September 22 2020, 07:00 PM
I hope this helps you . Usually, I advocate loading data into staging tables where all columns are strings and then doing to cleaning in the database.
However, load data infile does have some nice features for cleaning data. If your extra characters are spaces, you can use trim(). The key is variables and SET:
code :
LOAD DATA LOCAL INFILE "../.../mapping.csv"
    INTO TABLE db.Mapping 
    FIELDS TERMINATED BY ','
    LINES TERMINATED BY '\n'   
    IGNORE 1 LINES
    (@floor, . . . )  -- list the rest of the columns here
    SET floor = TRIM(@floor);
SET floor = REGEXP_REPLACE(@floor, '[^A-Z0-9]', '')


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How to skip columns in CSV file when importing into MySQL table using LOAD DATA INFILE?


By : Morten Sandberg
Date : March 29 2020, 07:55 AM
I wish this help you From Mysql docs:
code :
LOAD DATA INFILE 'file.txt'  
INTO TABLE t1 (column1, @dummy, column2, @dummy, column3);

How to split string with white spaces and include white spaces as elements in the result?multiple white spaces splitting


By : Mohamed Samir
Date : March 29 2020, 07:55 AM
I wish this helpful for you The code I used to split the string with any number of white space is , Try to split it like this:
code :
  String array[] = out.split("(?=\\s)",-1);
 public static void main(String[] args) {
    String out="SELECT * FROM EMP WHERE EMPID=10";
    String array[] = out.split("(?=\\s)",-1);

    for (String string : array) {       
    System.out.print(string);
    }
  }
SELECT * FROM EMP WHERE EMPID=10

mysql + importing a file with spaces in the column headers + how to handle


By : jaimin Patel
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , The MySQL LOAD DATA statement loads values from the file by position, not by name.
MySQL doesn't have any requirement about the "names" of the fields (from the header line in the .csv file) "matching" any column names. (It's possible that some other component of your system has that type of requirement, but MySQL LOAD DATA doesn't.)
code :
CREATE TABLE ... 
... 
`Rec Open Date` DATE NOT NULL COMMENT 'Rec Open Date',
^             ^
SHOW VARIABLES LIKE 'sql_mode' ;

SET sql_mode = 'ANSI_QUOTES,...' ;

SHOW VARIABLES LIKE 'sql_mode'

Variable_name  Value        
-------------  -----------
sql_mode       ANSI_QUOTES  
CREATE TABLE ... 
... 
"Rec Open Date" DATE NOT NULL COMMENT 'Rec Open Date',
^             ^

PHP Laravel : How to Avoid duplicate data while importing xl/ csv into mysql?


By : Cunyang
Date : March 29 2020, 07:55 AM
Hope this helps Some improvement on Matt Borja's answer. This will also check earlier data from table.
code :
public function importExcel()
{
    // Get current data from items table
    $titles = Item::lists('title')->toArray();

    if(Input::hasFile('import_file')){
        $path = Input::file('import_file')->getRealPath();
        $data = Excel::load($path, function($reader) {
        })->get();

        if(!empty($data) && $data->count()){
            $insert = array();

            foreach ($data as $key => $value) {
                // Skip title previously added using in_array
                if (in_array($value->title, $titles))
                    continue;

                $insert[] = ['title' => $value->title, 'description' => $value->description];

                // Add new title to array
                $titles[] = $value->title;
            }

            if(!empty($insert)){
                DB::table('items')->insert($insert);
              //  dd('Insert Record successfully.');
            }
        }
    }
    return back();    
}

Why white spaces are not considered as white spaces when we declare header file in c++?


By : Umair Khan
Date : March 29 2020, 07:55 AM
To fix the issue you can do There's no header file named iostream that begins and ends with a space character, so that's why you get an error.
The name, all of the characters, inside the <> or "" when you use #include designates a header name (with most implementations it refers to a physical file name)
code :
#include " file.h "
#include "file.h "
#include "file.h"
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