This means that the path C:\users\john can be typed out as:Īn escape character is a special character that is necessary for certain character entities to be represented in a string. Alternatively, you can also use / in place of all \. In MySQL strings, the \ is an escape character, so you’ll need to double up the character for it to be read properly in a string. Using the correct file path separatorsįor Windows machines, note that when you’re copying filepaths, the system will always use a \ as a directory separator by default. Here are some of the common errors that people run into when using LOAD DATA INFILE: a. This means that, for example, to capture the first character in a substring in SQL, we would use 1, 1) instead of 0, 1).Īfter running the above query, the CSV data should be input nicely into our database table as follows: Pickering Raffles Riveting Riveting Road The SQL SUBSTRING() and SUBSTRING_INDEX() functions are used to extract parts of the string from and most other programming languages, the first index of a string is numbered 1 - not 0 - in MySQL. Then, using the SET keyword, we set the algorithms that determine the values of each field (highlighted yellow above).Instead of assigning every column directly to a field, we assign the last 2 columns to variables and (highlighted green above).(`Username`, `User_Email`, `User_Country_Code` = 1, 3),Įssentially, what’s happening above is that: Instead of splitting the CSV file into these different columns so that we can import the data, we can use LOAD DATA INFILE to process the column data for us: LOAD DATA INFILE '/path/to/example.csv' This gives us the following database structure: Users Contact field into Country Code and Phone Number.Address field into Street, City and State, and the.For example, you might want to split the: In some cases, you might want to process the data in specific columns before inserting them into your table. This has led to the loss of nutritional value in our food over the years, and it will affect our food production capabilities in the coming decades. Poor farming practices and policies across the world have led to the degradation of agricultural soils in the world. Note also that the User_Address and the User_Contact fields are swapped, because the address field appears first in the CSV file, and that the User_ID field is auto-generated.Īrticle continues after the advertisement: The Save Soil Movement In the highlighted section above, we are specifying that column 1 of the CSV file goes into the Username field in the SQL table, column 2 goes into User_Email, and etc. (`Username`,`User_Email`,`User_Address`,`User_Contact`) Then, you’ll need to add the following line into your SQL code: LOAD DATA INFILE '/path/to/example.csv' For example, if your SQL table structure looks like this: Users In practice, your SQL table structure is going to different from your CSV file’s structure most of the time, so you’ll need to specify which columns of the CSV file go into which columns in your table. The appropriate newline character(s) for your platform, which is \n for macOS / Linux / Unix-based systems, and \r\n for Windows-based systems.Ģ.The name of the table you are importing the CSV into, and.You’ll need to replace the highlighted portions above with: So how do we load a CSV file into an SQL table? If we were loading the CSV into an SQL table with the exact same structure, we can use the following SQL code: LOAD DATA INFILE ' /path/to/example.csv' Processing column data before insertion.Importing a file with different columns.In such a case, to see the file as text, you will want to open these files on a text editing software such as Notepad. If a CSV file does not open as a text file on your computer, that’s because your computer is opening the file with a spreadsheet program such as Microsoft Excel. The commands to do that, however, are not very well-documented online. The above CSV file represents the following table: Pickering Street, Singapore, Raffles Lane, Singapore, Riveting Road, Singapore, Riveting Road, Singapore, Singaporeĭue to their tabular nature, data in a CSV file can very easily be imported into and stored in an SQL table. CSV stands for Comma- Separated Values, and CSV files are text files that look something like this: example.csv Pickering Street, Singapore, Raffles Lane, Singapore, Riveting Road, Singapore, Riveting Road, Singapore, Singapore",+65-87654321Įssentially, the CSV file format is meant to represent tabular data.
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