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How to convert comma-delimited string to list in Python?
...s
return res
# test the function.
delimeters = ',;- /|:'
# read the csv data from console.
csv_string = input('csv string:')
#lets check if working.
splitted_array = string_to_splitted_array(csv_string,delimeters)
print(splitted_array)
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Case insensitive searching in Oracle
...===============================================================--
SELECT /*csv*/ *
FROM tab1
WHERE name = 'jOHN' ;
-- no rows selected
SELECT /*csv*/ *
FROM tab1
WHERE name COLLATE BINARY_CI = 'jOHN' ;
/*
"I","NAME"
1,"John"
*/
SELECT /*csv*/ *
FROM tab1
WHERE name LIKE 'j%';
-- no rows selected
...
Convert Pandas column containing NaNs to dtype `int`
I read data from a .csv file to a Pandas dataframe as below. For one of the columns, namely id , I want to specify the column type as int . The problem is the id series has missing/empty values.
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Replacing blank values (white space) with NaN in pandas
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If you are exporting the data from the CSV file it can be as simple as this :
df = pd.read_csv(file_csv, na_values=' ')
This will create the data frame as well as replace blank values as Na
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access denied for load data infile in MySQL
...s code works for me:
File tempFile = File.createTempFile(tableName, ".csv");
FileUtils.copyInputStreamToFile(data, tempFile);
JdbcTemplate template = new JdbcTemplate(dataSource);
String path = tempFile.getAbsolutePath().replace('\\', '/');
int rows = template.update(MessageFor...
实战低成本服务器搭建千万级数据采集系统 - 更多技术 - 清泛网 - 专注C/C++...
...truncate，不能使用delete，因为delete需要查询，要用到索引读写，并且delete还会写数据库log耗费磁盘IO，存储空间也没有释放。truncate和drop是操作数据库删除数据比较好的做法。由于有两个表作为数据插入表，使用数据库表的自增id...
Read first N lines of a file in python
...he best, but for example if N=1000:
import pandas as pd
yourfile = pd.read_csv('path/to/your/file.csv',nrows=1000)
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Is there a way to ignore header lines in a UNIX sort?
... pass the input in a second time to the sed command, like this: cat sortMe.csv | (sed 1q sortMe.csv; sort -t, -k3 -rn) > sorted.csv
– Harry Cramer
Jun 5 at 3:00
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How do I get currency exchange rates via an API such as Google Finance? [closed]
...se refer to finance.yahoo.com.
Request: http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s=USDINR=X
This CSV was being used by a jQuery plugin called [Curry][1]. Curry has since (2017-08-29) moved to use fixer.io instead due to stability issues.
Might be useful if you need more than j...
Tools for Generating Mock Data? [closed]
...t can generate larges data set (unlimited size)
it supports various input (CSV, Flat Files, DBUnit) and output format (CSV, Flat Files, DBUnit, XML, Excel, Scripts)
it can be used on the command line or through a maven plugin
it's open source and customizable
I would give it a try.
BTW, a list of...