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how to display full stored procedure code?
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just in case anyone is confused as to where that table is: pg_catalog -> system table -> pg_proc
– Dimitris
Aug 24 '12 at 7:19
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What MySQL data type should be used for Latitude/Longitude with 8 decimal places?
...types and Point is a single-value type which can be used. Example:
CREATE TABLE `buildings` (
`coordinate` POINT NOT NULL,
/* Even from v5.7.5 you can define an index for it */
SPATIAL INDEX `SPATIAL` (`coordinate`)
) ENGINE=InnoDB;
/* then for insertion you can */
INSERT INTO `buildings`
(...
Conversion failed when converting date and/or time from character string while inserting datetime
I was trying to create a table as follows,
15 Answers
15
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Extract a substring according to a pattern
...sapply(strsplit(string, ":"), "[", 2)
## [1] "E001" "E002" "E003"
3) read.table
read.table(text = string, sep = ":", as.is = TRUE)$V2
## [1] "E001" "E002" "E003"
4) substring
This assumes second portion always starts at 4th character (which is the case in the example in the question):
substring(st...
How to select the row with the maximum value in each group
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Here's a data.table solution:
require(data.table) ## 1.9.2
group <- as.data.table(group)
If you want to keep all the entries corresponding to max values of pt within each group:
group[group[, .I[pt == max(pt)], by=Subject]$V1]
# ...
When should I use mmap for file access?
...om. (The OS can detect which pages are unmodified by initially marking writable mmap'd pages as read only and catching seg faults, similar to Copy on Write strategy).
mmap is also useful for inter process communication. You can mmap a file as read / write in the processes that need to communica...
Lost my schema.rb! Can it be regenerated?
...lright. It simply holds a representation of the structure of your database tables. The data itself is not contained in this file.
To regenerate your schema.rb file, run:
bundle exec rake db:schema:dump
Then simply commit the new schema.rb file and you should be in good shape!
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Is there a vr (vertical rule) in html?
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Tables can separate items vertically, so what you are saying is not the real reason there is no vr tag.
– CiscoIPPhone
Aug 4 '09 at 10:23
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ASP.NET MVC 5 - Identity. How to get current ApplicationUser
... having an extra context for starters, but going forward the user database tables change (3 times in the past 2 years) but the API is consistent. For example the users table is now called AspNetUsers in Identity Framework, and the names of several primary key fields kept changing, so the code in sev...
What is the best way to insert source code examples into a Microsoft Word document?
... I initially used the same technique but have since changed to using a table of 1x1 because I found that text boxes are an f'ing pain to position. I tried "top and bottom" so the text would be only before and after, and Word would magically move the box up or down, sometimes the caption would no...