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Avoid duplicates in INSERT INTO SELECT query in SQL Server
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Using NOT EXISTS:
INSERT INTO TABLE_2
(id, name)
SELECT t1.id,
t1.name
FROM TABLE_1 t1
WHERE NOT EXISTS(SELECT id
FROM TABLE_2 t2
WHERE t2.id = t1.id)
Using NOT IN:
INSERT INTO TABLE_2
(id, name)
SELECT t1.id,
t1.name
F...
Appending to an existing string
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165
You can use << to append to a string in-place.
s = "foo"
old_id = s.object_id
s <<...
Why are these constructs using pre and post-increment undefined behavior?
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14 Answers
14
Active
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Multiple simultaneous downloads using Wget?
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15 Answers
15
Active
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Measure execution time for a Java method [duplicate]
...em.out.println(stopTime - startTime);
In Java 8 (output format is ISO-8601):
Instant start = Instant.now();
Thread.sleep(63553);
Instant end = Instant.now();
System.out.println(Duration.between(start, end)); // prints PT1M3.553S
Guava Stopwatch:
Stopwatch stopwatch = Stopwatch.createStarted()...
PDO Prepared Inserts multiple rows in single query
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153
Multiple Values Insert with PDO Prepared Statements
Inserting multiple values in one execute ...
Array include any value from another array?
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edited Jan 18 at 6:58
answered Oct 15 '10 at 11:55
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How to get the last date of a particular month with JodaTime?
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Mar 14 '12 at 22:47
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A weighted version of random.choice
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312
Since version 1.7.0, NumPy has a choice function that supports probability distributions.
from...