So I am trying to insert data into my database, the connection is fine, But for some reason, when I try to create the prepared statements it's not working. All the values in my database are varchar(255) except for description…
I run sql query in Navicat, so got error; Query: ALTER TABLE `customer_eav_attribute` ADD CONSTRAINT `CUSTOMER_EAV_ATTRIBUTE_ATTRIBUTE_ID_EAV_ATTRIBUTE_ATTRIBUTE_ID` FOREIGN KEY (`attribute_id`) REFERENCES `eav_attribute` (`attribute_id`) ON DELETE CASCADE; Error: 1452 - Cannot add or update a child row: a foreign key constraint fails…
I have tried to create a REST APIs in Kotlin and Spring Boot and my Country entity has auditing fields created_at and updated_at which indicate the record creation and last modified date and time respectively. The Spring Boot application is…
is it wrong if i expect that SQL understands that it should check every single rows to see if S.PersonID is null? select OrderQty as 'OrderQty', case when (select S.PersonID from Sales.Customer as S) is null then 1 else 2…
I've been searching the internet for a couple hours now and I'm not sure how to resolve this at all. So brief description is a customer posts orders to our system and they can supply a Customer Reference that our…
I want to get rows where date is equal to Previous day, Table Schema as below, -- create a table CREATE TABLE students ( id INTEGER PRIMARY KEY, name TEXT NOT NULL, gender TEXT NOT NULL, xYear INTEGER, xMonth INTEGER,…
I am making a MySQL query of a table with thousands of records. What I'm really trying to do is find the next and previous rows that surround a particular ID. The issue is that when sorting the table in…
hope you guys are fine? OK.. i am using MySQL.Data client/library to access and use MySQL database. I was using happily it for sometimes on quite a few project. But suddenly facing a new issue that causing me hold on…
Probably it's a simple question, many people asked similar questions before, but it's very hard to find an answer for my specific case. I have a complex query like that: SELECT val1, val2, val3 FROM table1 LEFT JOIN ... WHERE…
If I have a mysql limited query: SELECT * FROM my_table WHERE date > '2020-12-12' LIMIT 1,16; Is there a faster way to check and see how many results are left after my limit? I was trying to do a…