I have an int column that contains values no larger than about 20. I want to select as its corresponding upper case letter of the alphabet: I don’t care what happens after Z because the column doesn’t contain larger values. Is there a simple way to do this with a SQL query, to convert to a single-…
Tag: mysql
SQL query for counting the number of same values in a table and fetching the first value if the count is greater than 1
There is a table such as I want the number of open-status records and if the number of records are greater than 1, I want to fetch the 1st open status record ID. for that, I have been trying doing like this which seems not working (please forgive me if it is a blunder). I finally want the ID of
When you give a table a name are you temporarily cloning it? (MySQL)
It’s a common question: Write an SQL query to delete all the duplicate emails, keeping only one unique email with the smallest id. Example 1: Input: Person table: Output: I know that to select what I don’t want, I have to do something like this: After that portion I got stuck, so I looked at the a…
How to convert Buffer to base64 image in Node js
I am getting data from my SQL database like this: How can I convert result to a base64 image in Node.js? For Example: ‘data:image/png;base64,iVBORw0KGgoAAAANS’ Answer Since you’re receiving a Buffer back as output, Buffer.toString(‘base64’) will convert the raw binary data in the buffe…
Need SQLQuery with Stored procedure with below example
I have the following MySQL-table the average must be using stored procedure, not normal query. I have normal SQL Query I want that to look like this, with a MySQL query: Answer If the Id’s on your table are unique, you can do it like this (you were pretty close… just the case when was missed in yo…
Tricky MySQL view
I am finding it very difficult to create a view in MySQL, and hope someone could help me out. This is the schema of my db: This database collects a series of football games and many characteristics for each one, as well as all the teams and the seasons. Thanks to this view (https://stackoverflow.com/a/7079444…
How can I extend an SQL query in a variable?
I am testing possible SQL injections on my DB, and I am running a simple function to get results which a user should not be getting. The return value is correct based on id, however, the rest of the query is completely being ignored. I want to return all the data from the data table. Is there something wrong …
Combine Date and Time Fields and Order By DateTime Field
I would like to combine the date and time for meta values performance_date_1 and performance_time_1 and then sort by this new DATETIME value. Here is my SQL query so far, but no luck. Query SQL: SELECT TIMESTAMP(performance_date_1, performance_time_1) as DateTimeTS FROM test ORDER BY DateTimeTS; Because of ho…
MYSQL Query select only first record of foreign key
First of all, I am pretty new to MySQL. I am currently stuck with the following query. I have several tables that have relations between each other. Every user can create multiple projects. Every project can have one attachment, multiple attachments (images) or no attachment at all. Every project only has one…
How do I convert SQL statement with alias in a valid Laravel query builder?
I am working on a Laravel 8 application. I have the flowing SQL statement containing the alias country for the column name of the countries table: I have used this online tool to convert it to a valid Laravel query builder. The problem Unfortunately, the result (visible below), ignores the alias and displays …