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How do I perform the SQL Join equivalent in MongoDB?
...s bear in mind that MongoDB collections are not equivalent to relational tables; each serves a unique design objective. A normalized table provides an atomic, isolated chunk of data. A document, however, more closely represents an object as a whole. In the case of a social news site, it can be argue...
Do you use source control for your database items? [closed]
...r, with a bit of work, you could do the same thing. Any DDL changes (ALTER TABLE, etc.) can be stored in text files. Keep a numbering system (or a date stamp) for the file names, and apply them in sequence.
Rails also has a 'version' table in the DB that keeps track of the last applied migration. Y...
Declaring a default constraint when creating a table
I am creating a new table in Microsoft SQL server 2000 by writing the code instead of using the GUI, I am trying to learn how to do it "the manual way".
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What is the difference between Views and Materialized Views in Oracle?
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What is the meaning of DISK based? Is it mean table is not part of DISK? Is it stored in a file and DISK access is faster that File access ....?
– Kanagavelu Sugumar
Sep 16 '14 at 3:55
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Can we have multiple in same ?
Can we have multiple <tbody> tags in same <table> ? If yes then in what scenarios should we use multiple <tbody> tags?
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MySQL INSERT INTO table VALUES.. vs INSERT INTO table SET
What is main difference between INSERT INTO table VALUES .. and INSERT INTO table SET ?
3 Answers
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Generate a random number in the range 1 - 10
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Actually I don't know you want to this.
try this
INSERT INTO my_table (my_column)
SELECT
(random() * 10) + 1
;
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How to vertically center a inside a div? [duplicate]
... @Blender Heh, though therein references a third option: display:table-cell; vertical-align:middle (along with a display:table-row parent). :) But no, you can be sure that I would never advocate using HTML table elements for layout.
– Phrogz
Dec 5 '10...
Delete duplicate rows from small table
I have a table in a PostgreSQL 8.3.8 database, which has no keys/constraints on it, and has multiple rows with exactly the same values.
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NameValueCollection vs Dictionary [duplicate]
...ionary<(Of <(TKey, TValue>)>)
class is implemented as a hash table.
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