{"id":1121,"date":"2012-10-30T09:17:05","date_gmt":"2012-10-30T09:17:05","guid":{"rendered":"http:\/\/beta.robertprice.co.uk\/robblog\/?p=1121"},"modified":"2012-10-30T09:17:05","modified_gmt":"2012-10-30T09:17:05","slug":"replacing-text-in-a-mysql-database","status":"publish","type":"post","link":"http:\/\/www.robertprice.co.uk\/robblog\/replacing-text-in-a-mysql-database\/","title":{"rendered":"Replacing Text In A MySQL Database"},"content":{"rendered":"

There are times when you find yourself having to rename data in your MySQL database based on a specific pattern.<\/p>\n

I had this very problem today. A designer had changed the dimensions of the thumbnails on a website and needed the data in the database updated to reflect the new path if they were stored in a specific directory.<\/p>\n

My first thought was to write a script to iterate through every row in the database, extract the data, manipulate it, then write it back. Thankfully, warning bells rang in my head and I thought about the problem again.<\/p>\n

MySQL offers various string manipulate routines and the REPLACE<\/code><\/a> takes a string, a substring to match, and a replacement to insert if a match occurs.<\/p>\n

UPDATE artists \nSET thumbnail_url=REPLACE(thumbnail_url, '\/160x90\/','\/150x84\/') \nWHERE thumbnail_url IS NOT NULL;<\/pre>\n
This SQL goes through each row in the artists table where the thumbnail_url is not null, replacing each instance of \/160×90\/ with \/150×84\/, keeping the other data intact.<\/p>\n","protected":false},"excerpt":{"rendered":"
There are times when you find yourself having to rename data in your MySQL database based on a specific pattern. I had this very problem today. A designer had changed the dimensions of the thumbnails on a website and needed the data in the database updated to reflect the new path if they were stored … Continue reading “Replacing Text In A MySQL Database”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2],"tags":[42],"class_list":["post-1121","post","type-post","status-publish","format-standard","hentry","category-dev","tag-mysql"],"yoast_head":"\nReplacing Text In A MySQL Database - Robert Price<\/title>\n<meta name=\"description\" content=\"How to rename and replace text content in a MySQL database based on a pattern.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.robertprice.co.uk\/robblog\/replacing-text-in-a-mysql-database\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Replacing Text In A MySQL Database - 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