The $wpdb->esc_like function exists in WordPress because the regular database escaping does not escape % and _ characters. This means you can add them in your arguments to wpdb::prepare() without problem. This is also what I see in the core WordPress code: $wpdb->prepare(” AND $wpdb->usermeta.meta_key = ‘{$wpdb->prefix}capabilities’ AND $wpdb->usermeta.meta_value LIKE %s”, ‘%’ . $this->role . … Read more
First of all your code is unsafe. Need to add the sanitize functions and the escaping query to the database The code is valid. Perhaps the problem is that you are simultaneously writing and deleting to the temporary table “faculty_temp” and the fetch request is sent when data is deleted or modified. Need to change … Read more
I installed xampp,but when I tried to run it I got an error as thus: Error MySQL said: Documentation 1045 – Access denied for user ‘root’@’localhost’ (using password: NO) Connection for controluser as defined in your configuration failed. phpMyAdmin tried to connect to the MySQL server, and the server rejected the connection. You should check … Read more
For those arriving at this question because of the question title (as I did), this solved my problem: This error can indicate that the table’s PRIMARY KEY is not set to AUTO-INCREMENT, (and your insert query did not specify an ID value). To resolve: Check that there is a PRIMARY KEY set on your table, and that the … Read more
8 I use Mysql Workbench to connect my database,[ Hostname Port and Username are as shown in figure ,and password is right.When I click Test Connection ,it show as above.But if i use 3307 in place of 3306 as port,it connect sucessfully. What matter lead that and how I fix it? I use macbook pro … Read more
When dealing with null, = does not match the null values. You can use IS NULL or IS NOT NULL LIMIT can be used with UPDATE but with the row count only
I have a query where I am using GROUP_CONCAT and a custom separator as my results may contain commas: ‘—-‘ This all works well, however it is still comma separated, so my output is: How can I make it so the output is: I thought this was the idea of a custom separator! Failing that, … Read more
MERGE is not supported by MySQL, However, there is other possible way of doing the same: INSERT…ON DUPLICATE KEY UPDATE If you specify the ON DUPLICATE KEY UPDATE option in the INSERT statement and the new row causes a duplicate value in the UNIQUE or PRIMARY KEY index, MySQL performs an update to the old row … Read more