My system consists of two user types - Students and Tutors. - Tutors can create classes and packs - Both Students and tutors can purchase classes and packs
Struggling getting a query to work…….. I have two tables:- tbl.candidates: candidate_id agency_business_unit_id
I have a list as follows: l = [0,0,0,0,0,0,1,1,1,1,1,1,0,0,0,0,2,2,2] I want to determine the length of a sequence of equal items, i.e for the given list I want the output to be:
I am doing some paging in my application, returning 20 rows from the database at a time using PostgreSQL\'s standard OFFSET and LIMIT keywords.For instanc开发者_StackOverflowe, to get page 1 page:
I have a small question. I need to make a predicate that counts from a natural number to some other natural number. I have to implement a check too, that the second interval is bigger than the first o
I need a little help on an image analysis algorithm in Java. I basically have images like this: So, as you might guessed, I need to count the lines.
I have a mysql table set up like this 开发者_如何学JAVA id | refference_id | data Is it possible to count the number of entries for each refference_id all in the query ? SELECT
Let\'s say I have table data similar to the following: 123456 JohnDoe 1Green2001 234567 JaneDoe 1Yellow 2001
regarding to this question, i have a problem if use that query for count some data. How to make it can count data for ex. from 2010-01 until 2010-05?
Let\'s say I have 3 tables: carts, baskets and eggs where a basket can contain many eggs and where carts contain many baskets. Each basket has a foreign key that maps to a cart and each egg has a fore
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