So i’m working on a university project but i have a problem that’s really starting to bother me. I am trying to update my database several times with different values, except that only the last value will be taken into account : they’re overwriting themselves. My code : And my SQL method is …
Tag: sql-update
How to check if all mysql results are equal
I’m facing a difficulty at the moment – I’m working on a real-estate website where the seller has some developments which have individual units within each development (a house with 4 apartments, for example). The development has a status column in the database which specifies if it is Avail…
How to update a column by joining four tables in laravel
I have four tables default_products_product_mileage_gap default_products_mileage_gap default_products_products default_products_products_mileage_gaps I am trying to update a column number_of_products_sold to some value using laravel What I have tried is: Here number_of_products_sold is not updating. How to up…
Php mysql query update of data gives syntax error
This is my php code to update products in database: It gives this error: Answer This code should work: But a better approach would be to use parameterized prepared statements as you are vulnerable now to SQL injections. Also refer to: https://dev.mysql.com/doc/apis-php/en/apis-php-mysqli.quickstart.prepared-s…
Update SQLite row only if a column is empty
I have the following: one and three should always be updated. However, how can I update two only if it is null/empty? I can do this in a separate command, though how can I achieve this in one prepared statement? I am using SQLite3 Answer Use a CASE expression for column two: Or with COALESCE():
query gives the same result multiple times
I am doing a CRUD and I’m doing the edit part, I have multiple tables that are related to each other by foreign key, like for example the table ’empleados’ has the foreign key ‘rela_usuarios’ which …
Can I call a stored procedure on each iteration of an array? PHP
I want to loop through an associative array that represents a table’s columns and values, and call a stored procedure on each iteration that will insert each value into its respective column. The assoc. array and loop looks like this: The stored procedure looks like this: Is this possible to do? Or is t…
ON DUPLICATE KEY UPDATE in oracle or equiv (defining key/column?)
I have the below working insert statement, where I am essentially mapping the column data from an uploaded .csv file through a loop into my VALUES variables below… All worked fine, except now I am just trying to add a tweak INSERT or UPDATE – if ‘app_id’ first column, value is found in…
How to update a database table data from an PHP array?
I need to update the information of a mysql table database from a php array. I’m looking for the best approach to do this, what I want to do is to update an existing database table with new information, this means that there could be new rows, the existing rows could have new values in their fields, or …
How to update a specific row in a table without a primary key in MySQL?
I am trying to use an UPDATE query in MySQL database table. I have primary key that auto increments in the table but I don’t want to use this key when doing this query. This is because this column doesn’t restart its count when records are deleted so there are gaps in the table. For example, if I …