I want to check in mysql if a column is either blank, ie \'\',开发者_如何转开发 or 0. Is there a way to do this with one condition?
I have the following models: class User < ActiveRecord::Base has_many :permissions has_many :tasks, :through => :permissions
How to get all name tables, name columns, and values in database. Example i have database \"Northwind\" in sqlserver 2005.
I have implemented a basic threaded producer-consumer (thread 1 = producer, thread 2 = consumer) using Boost threads and conditions. I am getting stuck in wait() indefinitely quite often. I can\'t rea
p = Person.find_by_id(1, :include => :bags, :conditions => [\'bag.id in (?), [3,4]) I would like to know how I could m开发者_JS百科ake sure this query will only be valid if both \'items.id\' \
I\'m writting a general DAO interface and facing a difficult in general Query operation. Query operation requires a set of query conditions. I\'d like to give a interface like
I\'m trying to display some text in a div named \"msg_box\" f开发者_C百科or each selected option. It works but not live. I have to refresh to see the result.
Very basic, but didn\'t know what this type of query is called...I want a query that will basically do this (pseudo-SQL):
I\'m having a bit of an issue by using Conditional Statements in PHP separated by HTML code. This is the type of code I\'m trying to write. This is a profile page and it should only be seen by the use
I\'m trying to copy entire rows of the Sheet ‘All’ to another s开发者_运维问答heet according to the data in column D. There are multiple values in column D (Homework/Advanced/Beginner) and the sheet
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