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How To Open & Manipulate Large (>100MB) CSV Files On A Mac
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Have you ever struggled to open and manipulate a large CSV file on a Mac? 100MB? 1 gigabyte or greater? Extremely large CSVs bring most spreadsheet utilities to a halt or the computer. I set out to figure out how to open and manipulate these files in a free and somewhat accessible way that was fast and didn’t risk crashes.
As a software engineer with a history of supporting marketing teams, I often encounter extremely large datasets including customer segment exports or analytics event logs that can be larger than a gigabyte. A good text editor can open these large CSVs but you lose spreadsheet capabilities like rearranging columns and filtering data.
In this post, I’ve outlined the different ways I’ve tried to manipulate large CSVs and their results. I’m using a 2018 Macbook Pro with a 2.6 GHz 6-core i7 and 16 GB of RAM. If you would like to skip the story and go straight to the best free solution, please click here.
Numbers & Excel
Numbers honestly performed the worst. It has a hard row limit that seemed to be independent of file size. This made it useless for my task. Google Sheets worked for some files but would tend to crash or hang past a certain file size. Excel for Mac performed well but it is a paid solution so I did not consider it viable for many developers. Typically, opening large CSVs is a relatively rare occurrence unless your a data analyst, so I tried to find a free solution that would work well. Additionally, Excel’s file size limit appears to be 2 gigabytes, so it won’t work well for anything larger than that.
OpenRefine
Google released a handy tool now called OpenRefine that enables lots of handy data manipulation operations. I was hoping this would be my answer to manipulating large CSVs. However, it definitely started getting really slow and crashing with files greater than a hundred megabytes. This is based on my memory from several months ago, I may test to get some better data around when it starts to crash.
CSV Explorer
I found a great SaaS solution for the problem, called CSV Explorer. They built a web tool to solve this exact problem. They have a free plan that has a limit of 5 million rows. If your data is column-heavy, this may be a great solution. The paid plans support up to 20 million rows. It’s a great solution if you don’t mind paying. Like I said earlier in the post, I desired a free solution so I kept researching.
MySQL Import Using Sequel Pro
Many database management programs give you the ability to import a CSV file. I had Sequel Pro installed so I decided to give this method an attempt. Sequel Pro is a free MySQL graphical management application for Macs. It has a great CSV import feature because it will help generate a table based on the CSV automatically. Here is a quick overview on how that works:
- Select the database you want to import into (or create a new one) and then go to File -> Import…
- Select the appropriate CSV files and make sure the import settings match your file’s needs.
- It’s best practice to name the table the same name as the file. This is especially important if later importing a much larger file into the same table.
Just like the other methods, the program crashed or froze when sufficiently large files were attempted. Specifically, my 1.32 GB CSV made Sequel Pro crash instantly.
MySQL Import Using Sequel Pro and the Command Line (Working Solution)
Finally! I found a solution that works reliably for large CSVs. Additionally, you can do complex sorting, filtering, and transformation operations if you are proficient with SQL.
For the sake of this example, let’s assume we are working with a CSV file >1GB that is called very_large_nov_2019.csv.
First, you must create a CSV file contain only the first 10-20 lines of your large CSV file, we will call it very_large_nov_2019_abridged.csv. I prefer to use a text editor to open the large CSV and then copy and paste the first 10-20 lines into a new text editor window and saving that file with a .csv extension.
Then, utilize the Sequel Pro import method described above. Make sure the table name matches the name of the original CSV file. In our example case, the table name should be very_large_nov_2019. Once the new table is created, go ahead and delete the rows in the table in preparation for the import of the large version of the CSV.
Use the following command to import your CSV file. I have enclosed data you must change in brackets ([ ]).
The table name should match the CSV name. If you created the table using Sequel Pro, this should be easy to accomplish. If you need to use a table name that is different than the filename, you can create a symbolic link:
To learn more about mysqlimport, it’s best to refer to the command on your system. You can read the man pages which are lengthy but thorough:
Or you can read the brief help output:
If you have any questions about this article or would like to get help with your MySQL problems, feel free to contact me.
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Updated: January 10, 2020 Home » Freeware and Software Reviews
The CSV format is very popular among accountants, it is a commonly used format that contains numbers and texts in a spreadsheet format. Unless you are into accounting, your computer will not likely have a CSV editor, especially Microsoft Excel.
Csv Editor Pro 3.0.20 Free For Mac Computer
Alternative 2020 Article ➤ 6 Free WordPress MySQL Database And Jpeg Files Backup Storage Service
If you are a web programmer or web developer, you will encounter CSV files from time to time, these are files exported by SQL databases. To read or edit these files you would need a CSV editor that are spreadsheet software. Here are some free CSV editor that enables you to make modification to your MySQL backups in CSV format, some do work with centos and Ubuntu Linux.
↓ 01 – CSVed | Windows
CSVed is the most complete and fully fledged editor for CSV files (comma-separated values). Such files are commonly exported from a database that needs special treatment on other programs, it is the preferred format to exchange data. By defining field and line separators, it is very easy to rebuild the original tabular structure before generating the CSV file. CSVed is an easy and powerful CSV file editor, you can manipulate any CSV file, separated with any separator. If you work daily with MySQL or SQL databases and data export, you will love this software.
↓ 02 – Table Tool | macOS
The CSV format is a common used file format to store and exchange tabular data. Almost all spreadsheet and database apps (e.g. Excel and Numbers) support it. Unfortunately, not all CSV files are made equal. CSV files use different record delimiters (comma or semicolon), character encodings, decimal separators or quoting styles.
TableTool handles these issues automatically. It detects the specification of a CSV file for you and displays its contents in a table view. Using TableTool is the easy way to create, edit and convert CSV files.
↓ 03 – LibreOffice Calc | Windows | Linux | macOS
Calc is the free spreadsheet program you’ve always needed. Newcomers find it intuitive and easy to learn, while professional data miners and number crunchers appreciate the comprehensive range of advanced functions. Built-in wizards guide you through choosing and using a comprehensive range of advanced features. Or you can download templates from the LibreOffice template repository, for ready-made spreadsheet solutions.
↓ 04 – iMatrixitor | Windows
The iMatrixitor is a Data File editor for CSV (Comma, Tab delimited fields) and fixed field position files. It supports Unix / PC formats of Text and binary files located both on local hard disk and remote FTP server. iMatrixitor can open / modify / save local and FTP file and also supports to “save as” files between local and FTP. iMatrixitor uses an external define file to format a kind of data file.
↓ 05 – CSVpad | Windows | Linux
CSVpad is a handy free CSV (Comma-separated values) editor. It support’s unicode and it is a portable application. CSVpad can manipolate columns and rows. Export CSV files into html / xml / OpenDocument Spreadsheet (ods) and Microsoft Excel 8.0 (xls) files. CSVpad is based on the DMcsvEditor, it works under Windows 8, Windows 7, Windows Vista, Windows XP & Linux. There are one or two surprise bonus features: “Snapshot” saves a JPG of the table, “Search Online” opens a web page with the results of a Google search for the selected cell. When you’re done, the file can be saved in CSV or with the other supported separators (tab/ colon/ semi-colon etc), or exported as XLS, ODS, XML or HTML.
↓ 06 – CSV Buddy | Windows
A Swiss knife for your CSV files! CSV Buddy helps you make your CSV files ready to be imported by a variety of software. Load/save/export files with various delimiters and lots of options. CSV Buddy helps you make your CSV files ready to be imported by a variety of software. Load files with all sort of field delimiters (comma, tad, semi-colon) and encapsulators (double/single-quotes or any other). Convert line breaks in data field (XL ready). Rename/reorder fields, add/edit records, filter or search, search and replace, save with any delimiters and export to fixed-width, HTML templates or XML formats. Unicode ready. Freeware.
↓ 07 – Rons CSV Editor Lite | Windows
Csv Editor Pro 3.0.20 Free For Macs
Rons CSV Editor is a powerful CSV file editor. It can open any format of separated text, including the standard comma and tab separated files (CSV and TSV), and allows total control over their content and structure. With a clean and neat interface Rons CSV Editor is also ideal to simply view and read CSV, or any text delimited, files.
Rons CSV Editor is the ultimate CSV editor, whether you need to edit a CSV file, clean some data, or merge and convert to another format, this is the ideal solution for anyone who regularly works with CSV files.
Csv Editor Pro 3.0.20 Free For Mac Pc
↓ 08 – reCsvEditor | Windows | macOS | Linux
Csv Editor Pro 3.0.20 Free For Mac Download
Editor for both Csv files and Fixed width files. There is automatic attribute detection for single record Csv Files. You can edit Fixed Width file and Multi-Record Csv / Fixed width files using a Xml Schema. There is also limited editing available for Xml and PO files. Supports for very large Files, as large as 1GB SQL files in CSV format.
Csv Editor Pro 3.0.20 Free For Mac Os
↓ 09 – Google Sheets | Web
Pull in data from multiple sources, including BigQuery, for deep insights. Sheets provides all the tools you need to analyze, visualize, and get the most out of your data. Additional APIs and connector tools help you process data from multiple sources — in CSV, Excel, or any other file format. For a deeper analysis, you can sync sheets with BigQuery and incorporate real-world datasets from the Census Bureau, World Bank, and more.
Csv Editor Pro 3.0.20 Free For Mac Windows 7
↓ 10 – Apache OpenOffice Calc | Windows | macOS | Linux
Calc is the spreadsheet application you’ve always wanted. Newcomers find it intuitive and easy to learn; professional data miners and number crunchers will appreciate the comprehensive range of advanced functions. Save your spreadsheets in OpenDocument format, the new international standard for office documents. This XML based format means you’re not tied in to Calc. You can access your spreadsheets from any OpenDocument compliant software.
You are free to import your old Microsoft Excel spreadsheets, or save your work in Excel format for sending to people who are using Microsoft products. Calc is able to read .xlsx files created with Microsoft Office 2007 or Microsoft Office 2008 for Mac OS X.