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How to select all records from one table that do not exist in another table?
...at is happening here?
A: Conceptually, we select all rows from table1 and for each row we attempt to find a row in table2 with the same value for the name column. If there is no such row, we just leave the table2 portion of our result empty for that row. Then we constrain our selection by picking o...
How to check if smtp is working from commandline (Linux) [closed]
I have a SMTP-server, for the purpose of this question lets call it: smtp.mydomain.com.
4 Answers
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What column type/length should I use for storing a Bcrypt hashed password in a Database?
... a hashed password (using BCrypt) in a database. What would be a good type for this, and which would be the correct length? Are passwords hashed with BCrypt always of same length?
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Given the lat/long coordinates, how can we find out the city/country?
For example if we have these set of coordinates
14 Answers
14
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MySQL “between” clause not inclusive?
...n a query with a between clause, it seems to exclude the ending value.
For example:
10 Answers
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Find objects between two dates MongoDB
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Querying for a Date Range (Specific Month or Day) in the MongoDB Cookbook has a very good explanation on the matter, but below is something I tried out myself and it seems to work.
items.save({
name: "example",
created_at: IS...
Date query with ISODate in mongodb doesn't seem to work
...is returned when you print out the Query object in Spring. The serialized form of the query is not necessarily a valid query that you can just copy/paste into a mongo shell, which in itself is kind of frustrating. The culprit is here: grepcode.com/file/repo1.maven.org/maven2/org.mongodb/…
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How can I display a JavaScript object?
How do I display the content of a JavaScript object in a string format like when we alert a variable?
38 Answers
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how to find host name from IP with out login to the host
...o run sudo yum install bind-utils first. this will install nslookup lookup for you
– lfender6445
Jul 5 '15 at 0:10
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Is there a way to make text unselectable on an HTML page? [duplicate]
...ith some text elements, such as tab names, which look bad when selected. Unfortunately, it's very easy for a user to double-click a tab name, which selects it by default in many browsers.
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