![]() It might help you in other scenarios and its a handy option to have in mind – especially as it is quite fast. This might not work for product descriptions in other complex CMS systems or whatever application it is. In my case, an old budgetless Prestashop installation, this dirty quick method does the job. ![]() A nice and easy way to replace a string using a query just like you would do it in a text editor with find and replace.Īnd I can’t stress this enough: be wary of what and where you replace so you don’t mess things up. In all fairness, you should really have a test installation or a backup so… yeah. Check it before you actually run the query. I know it’s logic, but it can be easily overlooked. Or else you’ll replace the HTTP part of a HTTPS link and you’ll end up with something like HTTPSS. Please note that in such scenarios, it is vital to also put those two dots… “:”. You can think about it like a phpMyAdmin find and replace. The above query will make all the links in the selected field go from HTTP to HTTPS. Your_table is your table’s name, your_field is the column name and the HTTP: and HTTPS: are the actual strings. ![]() SET your_field = REPLACE( your_field, ' HTTP:', ' HTTPS:') The database management system uses tables to store data and make it available when needed. While true in principle, it’s worth first looking at the structure of MySQL. So the actual query we’re going to run is this: UPDATE your_table The function of MySQL REPLACE can be summarized in one sentence: to replace all occurrences of a substring with another substring. Go to the SQL tab (upper section of your screen).The situation above is described in this screenshot of PhpMyadmin:Īfter you’ve determined the name of the database, table, and column we need to work on and, most importantly, the string we need to replace and what to replace it with, do this in PhpMyAdmin: (I found out using Ahrefs Site Audit feature, but there are plenty of other tools and even just manually checking for issues is a thing) So we’ve identified about 600 descriptions that have HTTP image links to another domain somehow. And it has a column named ‘description’, where each product has its own description stored. So we have this table named ‘ps_product_lang’. ![]() But it’s not great as that image must be downloaded from somewhere else and not using the CDN or at least their own server and domain name. Especially bad when they copy-paste HTTP links (I know, can you believe their supplier’s website does not use HTTPS in 2022?). Matches the character that follows the backslash (\) as a literal.I often find myself using this command on a client’s product table where their content writers copy-paste image links randomly into the description. For example, (database|management)system matches ‘database system’ and ‘management system’. Matches either the expression before or the one after the OR symbol (|). Matches any character not in the set of characters following the ^. To specify a range of characters, list the starting and ending character separated by a dash (-), as in. Matches any one of the characters within the. In a Replace expression, inserts a line break. Matches a platform-independent line break. Matches only when a word ends at this point in the text. Matches at least one occurrence of the preceding expression.Īnchors the match string to the beginning of a line.Īnchors the match string to the end of a line. Instead we know that all the ASCII characters that doesn't involves special character lies within ASCII codes \x20-\x7E (Hex representation). Matches zero or more occurrences of the preceding expression, finding all possible matches. This solution doesn't involves creating procedures or functions or lengthy use of replace within replace. To replace values in a column of a table you have to use UPDATE statement and assign the new value to the column: CREATE TABLE content ( c1 TEXT) - Insert sample data first. Matches any single character except a line break. Replace Data in Table: REPLACE function does not change the original string value, it just replaces the specified occurrences with a new value, and returns a new string. The drop-down list contains the following regular expressions: Syntax ![]()
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