database - Read For Learn

How to CRUD remotely hosted WP database without root?

Naming conventions for database tables

There’s only one naming convention to remember, the WP table prefix. If you don’t want to use it you can do whatever you want. WordPress only cares about its own tables, you can create any other tables you want. Keep in mind though that the WordPress table prefix isn’t always wp_, and it changes for … Read more

Find specific text in the database and display the context of where that text is

For this I suggest you to use Search and Replace plugin which has Dry Run option under Tools > Search & Replace > Search & Replace, here we need to check the Dry Run checkbox. In Dry Run we can find in which table we have that searched text so from that you can find … Read more

Database table prefix different between wp-config.php and in database

WordPress can only use the tables with the same prefix as listed in the wp-config.php file. Many times when a database has been used for sometime it will hold several version of the site in the same database by adding different table prefixes to the site versions. This is likely what you are seeing. It … Read more

Function wpdb::prepare was called incorrectly. The query argument of wpdb::prepare() must have a placeholder

There are 2 places that could have issues: Your first wpdb::prepare() here: // Prepare and execute the count query $count_query = $wpdb->prepare( $count_sql, …$query_params ); The initial value you set for $count_sql is “SELECT COUNT(*) FROM $table_name WHERE 1=1”, and if $filters doesn’t have any key matching your switch, the value of $count_sql will remain … Read more

How to monitor database for uptime? [closed]

Yes, you can set up a free method to check if your WordPress database is online and get an email if the site shows the “Error Establishing a Database Connection” message. You can achieve this by adding a simple PHP script to your WordPress theme or via a custom plugin. Step-by-Step Solution: Create a Custom … Read more

SQL errors when querying for something with apostrophes

Using the wpdb::prepare() method is recommended for creating queries properly and avoiding SQL injection. For a basic solution, use the addslashes() function, but this is not sufficient for preventing SQL injection. See Mysql + php with special characters like ‘(Apostrophe) and ” (Quotation mark).