I was wondering is it possible to create from jpa/hibernate annotation a database column description/comment like this: ALTER TABLE tablename CHANGE status status INT(11) NOT NULL COMMENT ‘sample description/comment’; It will be great functionality, but I cant find anything about this in JPA speci…
Tag: mysql
Fatal error stating “Call to a member function bind_param() on a non-object”
I’ve gotten a fatal error, which I do not know where went wrong. My Category page, and this is my function script for getCategoryArrCon Answer If you have noticed, when you echo your prepared statement, it will look just like this: That simple space is important also in the middle of c.image and FROM to…
How to get current and previous ids of current id in one query(mysql)
My table is like this: The current empid is for example 10, I want the previous and next empids from the database. The next and previous values may not be 11 and 9 respectively, I need to get it from the database only in a single query. Could any body please help me with this? Answer ex. empid = 4
Return rows with more than one comma separated value in a string
I have a table called contacts and in that table there is a field called contact_type. contact_type is varchar and stores comma separated values in a sting like this: ^Media^,^Historical^ However …
MySQL – Find the largest time difference between consecutive datetimes
I have a table that contains a list of datetimes. I’d like to find the longest amount of time between consecutive datetimes ie., find the largest distance between any two datetime entries that fall …
SQL – Get result of current year only
How can I get the result of the current year using SQL? I have a table that has a column date with the format yyyy-mm-dd. Now, I want to do select query that only returns the current year result. The pseudo code should be like: The result should be as following: How can I do this? Answer Use YEAR() to
MySQL monthly Sale of last 12 months including months with no Sale
This query displaying result for only existing month. I need all 12 months sales. Output: Required Output: Answer Thanks for @pankaj hint, Here i resolved it via this query…
How to get the column name of the result of a least function?
I have an employee table that looks like this: I needed to get the minimum value and maximum value of questions where the id is equal to 4. In this case, I needed 5 and 25 returned. I acheived that using the following query: But what this doesn’t return is the question id. How can I adjust my query to
Retrieve rows in which a column doesn’t contain a value
I have a MySQL table like below: | ID | userIDs ————— | 1 | 4,3,5 | 2 | 2,3 | 3 | 1,2,3 I want to retrieve all the rows in which userIDs doesn’t contain 1. I tried SELECT * …
MySQL query to get “intersection” of numerous queries with limits
Assume I have a single mySQL table (users) with the following fields: I want to be able to return the number of total records based on the number a user enters. Furthermore, they will also be providing additional criteria. In the simplest example, they may ask for 1,000 records, where 600 records should have …