delimiter

I have strings like 'keepme:cutme' or 'string-without-separator' which should become respectively 'keepme' and 'string-without-separator'. Can this be done in PostgreSQL? I tried: select substring('first:last' from '.+:') But this leaves the : in and won't work if there is no : in the string. Erwin Brandstetter Use split_part() : SELECT split_part('first:last', ':', 1) AS first_part Returns the whole string if the delimiter is not there. And it's simple to get the 2nd or 3rd part etc. Substantially faster than functions using regular expression matching. And since we have a fixed delimiter we

I have seen multiple threads about what the best solution to auto detect the delimiter for an incoming CSV. Most of them are functions of length between 20 - 30 lines, multiple loops pre-determined list of delimiters, reading the first 5 lines and matching counts e.t.c e.t.c Here is 1 example I have just implemented this procedure, with a few modifications. Works brilliantly. THEN I found the following code: private function DetectDelimiter($fh) { $data_1 = null; $data_2 = null; $delimiter = self::$delim_list['comma']; foreach(self::$delim_list as $key=>$value) { $data_1 = fgetcsv($fh, 4096,

What is the best way to have the functionality of the StreamReader.ReadLine() method, but with custom (String) delimiters? I'd like to do something like: String text; while((text = myStreamReader.ReadUntil("my_delim")) != null) { Console.WriteLine(text); } I attempted to make my own using Peek() and StringBuilder , but it's too inefficient. I'm looking for suggestions or possibly an open-source solution. Thanks. Edit I should have clarified this earlier...I have seen this answer , however, I'd prefer not to read the entire file into memory. I figured I would post my own solution. It seems to

I have a .json with 3 columns where one of them is 'Year'. The column contains only years. No dates!. When I am graphing it on the 'x' axis the years come out with a comma delimiter for thousands. So in the .json the date is this format :"Year":1990 and on the 'x' axis it comes out like that 1,990 I have been trying to figure out how to parse the year but I have no luck so far. I have tried the following: var parseDate = d3.time.format("%y").parse var x = d3.time.scale() .range([0, width]); //further down d3.json("waterData.json", function(error, json) { // Attach Data var data = json.data; //

when I change Delimeter from mysql console or MySQL Workbench I do not get any error, but when I embed the same code in ruby on rails I get error mysql> DELIMITER $$ mysql> gives no error. but ActiveRecord::Base.connection.execute(%Q{ DELIMITER $$ }) gives: ActiveRecord::StatementInvalid: Mysql2::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DELIMITER $$' at line 1: DELIMITER is actually a MySQL command line setting, not SQL: http://dev.mysql.com/doc/refman/5.0/en/mysql-commands.html . That means