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Save PL/pgSQL output from PostgreSQL to a CSV file
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Do you want the resulting file on the server, or on the client?
Server side
If you want something easy to re-use or automate, you can use Postgresql's built in COPY command. e.g.
Copy (Select * From foo) To '/tmp/test.csv' With CSV DELIMITER ',' HEADER;
This approach runs entirely on the remo...
How to prevent ifelse() from turning Date objects into numeric objects
... note: I see that Hadley has built an if_else into the the magrittr/dplyr/tidyr complex of data-shaping packages.
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Update a column value, replacing part of a string
...iversity
SET course_name = REPLACE(course_name, '&amp', '&') WHERE id = 1
Results: Engineering &amp Technology => Engineering & Technology
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Bash script processing limited number of commands in parallel
...ed before starting the next set.
From the GNU manual:
wait [jobspec or pid ...]
Wait until the child process specified by each process ID pid or job specification jobspec exits and return the exit status of the last
command waited for. If a job spec is given, all processes in the job
ar...
jQuery Tips and Tricks
...nt and keeping a reference
var newDiv = $("<div />");
newDiv.attr("id", "myNewDiv").appendTo("body");
/* Now whenever I want to append the new div I created,
I can just reference it from the "newDiv" variable */
Checking if an element exists
if ($("#someDiv").length)
{
// It exi...
Stored procedure slow when called from web, fast from Management Studio
... Hi, Clearing the cache DBCC DROPCLEANBUFFERS and DBCC FREEPROCCACHE did the trick! I am guessing the execution plan was somehow corrupt or not updated. I am dubious that it's a permanent fix, if it could get corrupt once, it could do it again. So I am still looking into the plausible causes. S...
What CSS selector can be used to select the first div within another div
... H1 is always going to be there, then
div h1+div {...}
but don't be afraid to specify the id of the content div:
#content h1+div {...}
That's about as good as you can get cross-browser right now without resorting to a JavaScript library like jQuery. Using h1+div ensures that only the first div...
Best way to check if a Data Table has a null value in it
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I will do like....
(!DBNull.Value.Equals(dataSet.Tables[6].Rows[0]["_id"]))
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Removing list of vms in vagrant cache
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You should use the following command to remove invalid entries from the global index:
vagrant global-status --prune
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Strip html from string Ruby on Rails
... html from a string using sanitize or equal method and keep only text inside value attribute on input tag?
6 Answers
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