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UPDATE multiple tables in MySQL using LEFT JOIN
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UPDATE t1
LEFT JOIN
t2
ON t2.id = t1.id
SET t1.col1 = newvalue
WHERE t2.id IS NULL
Note that for a SELECT it would be more efficient to use NOT IN / NOT EXISTS syntax:
SELECT t1.*
FROM t1
WHERE t1.id NOT IN
(
S...
What does android:layout_weight mean?
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OneCricketeer
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answered Oct 22 '10 at 10:55
FloFlo
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How do you find the sum of all the numbers in an array in Java?
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26 Answers
26
Active
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Heroku push rejected, no Cedar-supported app detected
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edited Sep 3 '15 at 12:37
answered Nov 18 '12 at 2:34
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Eclipse compilation error: The hierarchy of the type 'Class name' is inconsistent
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23 Answers
23
Active
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Python AttributeError: 'module' object has no attribute 'Serial' [duplicate]
I'm trying to access a serial port with Python 2.6 on my Raspberry Pi running Debian.
My script named serial.py tries to import pySerial:
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New lines inside paragraph in README.md
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524
Interpreting newlines as <br /> used to be a feature of Github-flavored markdown, but the...
The written versions of the logical operators
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112
They originated in C in the header <iso646.h>. At the time there were keyboards that could...
REST response code for invalid data
...either change the Reason Phrase or include a body to explain the error.
412 - Precondition failed is used for conditional requests when using last-modified date and ETags.
403 - Forbidden is used when the server wishes to prevent access to a resource.
The only other choice that is possible is 422...
Nested rows with bootstrap grid system?
I want 1 larger image with 4 smaller images in a 2x2 format like this:
2 Answers
2
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