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SQL Joins Vs SQL Subqueries (Performance)?
I wish to know if I have a join query something like this -
8 Answers
8
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Disable a Maven plugin defined in a parent POM
I am using a parent POM that defines a plugin that I do not want to be run in a child POM. How can I disable the plugin in the child pom completely?
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How to implement a custom AlertDialog View
In the Android docs on AlertDialog , it gives the following instruction and example for setting a custom view in an AlertDialog:
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Get selected value/text from Select on change
I need to get the value of the selected option in javascript: does anyone know how to get the selected value or text, please tell how to write a function for it. I have assigned onchange() function to select so what do i do after that?
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Jdbctemplate query for string: EmptyResultDataAccessException: Incorrect result size: expected 1, ac
I am using Jdbctemplate to retrieve a single String value from the db. Here is my method.
17 Answers
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Ways to save Backbone.js model data?
I am more into front end development and have recently started exploring Backbone.js into my app. I want to persist the model data to the server.
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You can't specify target table for update in FROM clause
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The problem is that MySQL, for whatever inane reason, doesn't allow you to write queries like this:
UPDATE myTable
SET myTable.A =
(
SELECT B
FROM myTable
INNER JOIN ...
)
That is, if you're doing an UPDATE/INSERT/DELETE on a table, you can't referen...
how to show progress bar(circle) in an activity having a listview before loading the listview with d
I have a ListView in my second activity.OnItemClick of it I called a webservice and trying to fetch data. And after that I am moving to third activity which also have a ListView having description of previous activities ListView item.
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What's the difference between identifying and non-identifying relationships?
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An identifying relationship is when the existence of a row in a child table depends on a row in a parent table. This may be confusing because it's common practice these days to create a pseudokey for a child table, but not make the for...
SQL RANK() versus ROW_NUMBER()
I'm confused about the differences between these. Running the following SQL gets me two idential result sets. Can someone please explain the differences?
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