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Oracle Differences between NVL and Coalesce
...ession "COALESCE stops at first occurrence of a non-Null value", otherwise test case No. 4 should not raise an error.
Also according to test case No. 5 COALESCE does an implicit conversion of arguments.
DECLARE
int_val INTEGER := 1;
string_val VARCHAR2(10) := 'foo';
BEGIN
BEGIN
DB...
For..In loops in JavaScript - key value pairs
...ly or with Babel (js compiler) then you could do the following:
const test = {a: 1, b: 2, c: 3};
for (const [key, value] of Object.entries(test)) {
console.log(key, value);
}
Which will print out this output:
a 1
b 2
c 3
The Object.entries() method returns an array of a given o...
Check list of words in another string [duplicate]
...
If your list of words is of substantial length, and you need to do this test many times, it may be worth converting the list to a set and using set intersection to test (with the added benefit that you wil get the actual words that are in both lists):
>>> long_word_list = 'some one long...
Regex: matching up to the first occurrence of a character
...
sample text:
"this is a test sentence; to prove this regex; that is g;iven below"
If for example we have the sample text above, the regex /(.*?\;)/ will give you everything until the first occurence of semicolon (;), including the semicolon: "this...
What's Mongoose error Cast to ObjectId failed for value XXX at path “_id”?
...
This worked me as well. Looks like The /test/create satisfies this /test/:id with id=create. and string cannot be cast to_id.
– kaila88
Mar 30 at 22:02
...
You can't specify target table for update in FROM clause
...
You can make this in three steps:
CREATE TABLE test2 AS
SELECT PersId
FROM pers p
WHERE (
chefID IS NOT NULL
OR gehalt < (
SELECT MAX (
gehalt * 1.05
)
FROM pers MA
WHERE MA.chefID = p.chefID
)
)
...
UPDATE pers P
SET P.gehalt = P.gehal...
How to delete shared preferences data from App in Android
...ring the preferences file does not appear to actually delete it. In my own tests by watching the "Data" usage listed in the App Info panel, creating a new SharedPreference file adds 4KB to this value but using editor.clear().commit() does not reduce the number.
– Code Commander...
How to forward declare a template class in namespace std?
...s reserved for use by the implementation, so you should use something like TEST_H instead of __TEST__. It's not going to generate a warning or an error, but if your program has a clash with an implementation-defined identifier, then it's not guaranteed to compile or run correctly: it's ill-formed. A...
Global variables in R
... set a global variable in a mailinglist posting via assign:
a <- "old"
test <- function () {
assign("a", "new", envir = .GlobalEnv)
}
test()
a # display the new value
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How to remove not null constraint in sql server using query
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Remove constraint not null to null
ALTER TABLE 'test' CHANGE COLUMN 'testColumn' 'testColumn' datatype NULL;
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