I think MySQL is the most difficult language for me, I\'ve started to learn MySQL one year ago and I still don\'t understand what I can do and how I can build my queries without asking here.
What I have is an XML we receive from a web service which represents a list of questions.The questions are broken down by type which indicates how they should be displayed on the web.For instance:
I am working on a slight complex (at least for me) mySQL query containing a subquery and it isn\'t going to well to be honest.
I am sure this is simple to do and I am missing something on formatting but I want to add the following query:
I understand how to do this on paper in SQL, but am having trouble implementing this in Java (this is the first time I am actually programming JDBC stuff)
I have to write a query to database, that has such table: TABLE HISTORY: ID | ITEM_ID | USER_ID | DATE and
Qe : 1) select a.finishproductid from tblt_invoiceorderitems a, tblm_invoiceorder b where b.invoiceorderdate <= \'Current Date\' and
EXPLAIN SELECT node_id FROM node WHERE person_id IN (SELECT person_id FROM user 开发者_开发知识库WHERE is_locked = 0);
I have implemented a paging routine using skip and take. It works great, but I need the total number of records in the table prior to calling Take and Skip.
As this is my first post it seems I can only post 1 link so I have listed the sites I\'m referring to at the bottom. In a nutshell my goal is to make the database return the results faster, I have tri
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