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PostgreSQL naming conventions
... case, etc, the prevalent convention is:
SQL keywords: UPPER CASE
names (identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers cas...
Convert a JSON String to a HashMap
...shMap.class);
str, your JSON String
As Simple as this, if you want emailid,
String emailIds = response.get("email id").toString();
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Why is a “GRANT USAGE” created the first time I grant a user privileges?
I'm new to the admin side of DBMS and was setting up a new database tonight (using MySQL) when I noticed this. After granting a user a privilege for the first time, another grant is created that looks like
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How to print formatted BigDecimal values?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
AWS Difference between a snapshot and AMI
...priate metadata. The trickiest part of this is specifying the correct AKI id (kernel) so that it boots correctly.
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Authoritative position of duplicate HTTP GET query keys
...n and has been analyzed by OWASP: owasp.org/images/b/ba/AppsecEU09_CarettoniDiPaola_v0.8.pdf At page 9 you'll find a list of 20 systems and a description how they handle this issue.
– SimonSimCity
Sep 5 '12 at 21:44
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How do I add the contents of an iterable to a set?
... set() costs about 1.5x what update does but half of what adding each individual item in a loop does.
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jQuery .data() does not work, but .attr() does
... return an Object while retrieval via .attr() will return a string. See jsfiddle example.
Since .data() does extra processing jQuery stores the results of attribute evaluation in $.cache - after all, once a data attribute has been evaluated it would be wasteful to re-evaluate on every .data() call ...
Can we have multiple “WITH AS” in single sql - Oracle SQL
... clauses.
The error I'm getting following these WITH declarations is the identifiers (field names) in B are not recognized, down in the body of the rest of the SQL. So the WITH syntax seems to run OK, but cannot access the results from t2.
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What is the maximum number of characters that nvarchar(MAX) will hold?
...Wow... so i guess i don't really need to worry about setting a max size validation rule then. I had better be carefull about when I use the nvarchar(MAX) though.
– quakkels
Nov 24 '10 at 18:17
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