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What is the difference between partitioning and bucketing a table in Hive ?
...ten used for distributing load horizontally, this has performance benefit, and helps in organizing data in a logical fashion. Example: if we are dealing with a large employee table and often run queries with WHERE clauses that restrict the results to a particular country or department . For a faster...
How to properly create composite primary keys - MYSQL
... gross oversimplification of an intense setup I am working with. table_1 and table_2 both have auto-increment surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 .
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Get ID of last inserted document in a mongoDB w/ Java driver
... Object to ObjectId, given a com.mongodb.client.MongoCollection collection and a org.bson.Document doc, you can do the following:
collection.insert(doc);
ObjectId id = doc.getObjectId("_id");
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SQL JOIN and different types of JOINs
What is a SQL JOIN and what are different types?
6 Answers
6
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Wildcards in jQuery selectors
... to use a wildcard to get the id of all the elements whose id begin with "jander". I tried $('#jander*') , $('#jander%') but it doesn't work..
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Does the join order matter in SQL?
Disregarding performance, will I get the same result from query A and B below? How about C and D?
4 Answers
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How can I change CSS display none or block property using jQuery?
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The correct way to do this is to use show and hide:
$('#id').hide();
$('#id').show();
An alternate way is to use the jQuery css method:
$("#id").css("display", "none");
$("#id").css("display", "block");
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Remove by _id in MongoDB console
...jectId.
Also, note that in some drivers/tools, remove() is now deprecated and deleteOne or deleteMany should be used instead.
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jQuery Determine if a matched class has a given id
...hat it won't apply to all #foo elements (though there should only be one), and it won't apply to all .bar elements (though there may be many). It will only reference elements that qualify on both attributes.
jQuery also has a great .is method that lets your determine whether an element has certain ...
Check if a dialog is displayed with Espresso
I'm trying to write some tests with the new android-test-kit (Espresso) . But I can't find any information on how to check if a dialog is displayed and perform some actions on it (like clicking the positive and negative buttons, e.t.c.). Note that a dialog may be also displayed by a WebView , no...