How can I create qvd file using Qlikview, or using an other tool
and how can i use qlikview using that file
STORE YourTable into QvdName.qvd;
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I have downloaded a CSV file and am trying to use it for a SQL project (I am using Jupyter notebooks). Do I even need the CSV file or is there a way to use it without downloading it? I'm very new to all of this!
This is the link to the data that I downloaded:
https://github.com/new-york-civil-liberties-union/NYPD-Misconduct-Complaint-Database
What's your goal? Are you trying to learn SQL, or do you just want to work with the data?
If all you want is to load that csv into a table in a SQLite database, it would be easiest to do using the sqlite command line shell.
I'm on Windows, so forgive me if you aren't...
Open the Command Prompt
Navigate to the folder in which you want the new sqlite db file (e.g. cd C:\Users\User\Data)
sqlite3 NewDBName.db (e.g. sqlite3 MyNewDb.db)
.mode csv
.import path/to/downloaded/csv.csv NewTableName (e.g. .import C:\Users\User\Downloads\CCRB_database_raw.csv CCRB
That should be it. You can check it worked by running .schema- you should see the structure of your new tables.
Now you can try out some sql statements:
SELECT * FROM CCRB LIMIT 10;
Here are some more detailed instructions.
I have a package that daily imports a file to Data lake store. So that is the same file with different values(same columns etc). My idea is to merge those files into a single file on Data lake, for a monthly report. I want to investigate U-SQL, so my question is:
Is that possible to do with U-SQL?
If its not possible is there any other options to do that?
It is very easily possible to merge records from two files and write a new file. Here are the steps
Read all of the new file using EXTRACT
Read all the records of the current master file using EXTRACT
Use UNION ALL to merge the records: https://msdn.microsoft.com/en-us/library/azure/mt621340.aspx
Write output to master file using OUTPUT statement
For a quick U-SQL tutorial go here: https://learn.microsoft.com/en-us/azure/data-lake-analytics/data-lake-analytics-u-sql-get-started
I need to import data from CSV file into MySql database using YII Framework,
CSV files contains datas which should to imported to two tables in Mysql DB, Please provide any information to proceed.
try this
Importing CSV file to mysql table using "LOAD DATA" command
You can take a look at this extension:
www.yiiframework.com/extension/importcsv/
i have created a table in Hive "sample" and loaded a csv file "sample.txt" into it.
now i need that data from "sample" into my local /opt/zxy/sample.txt.
How can i do that?
Hortonworks' Sandbox lets you do it through its HCatalog menu. Otherwise, the syntax is
INSERT OVERWRITE LOCAL DIRECTORY '/tmp/c' SELECT a.* FROM b
as per Hive language manual
Since your intention is just to copy the entire file from HDFS to your local FS, I would not suggest you to do it through a Hive query, because of the following reasons :
It'll start a Mapreduce job which will take more time than a normal copy.
It'll create file(s) with different names(000000_0, 000001_0 and so on), which will require you to rename the file manually afterwards.
You might face problem in opening these files as they are without any extension. Your OS would be unable to choose an application to open these files on its own. In such a case you either have to rename the file or manually select an application to open it.
To avoid these problems you could use HDFS get command :
bin/hadoop fs -get /user/hive/warehouse/sample/sample.txt /opt/zxy/sample.txt
Simple n easy. But if you need to copy some selected data, then you have to use a Hive query.
HTH
I usually run my query directly through Hive on the command line for this kind of thing, and pipe it into the local file like so:
hive -e 'select * from sample' > /opt/zxy/sample.txt
Hope that helps.
Readers who are accessing Hive from Windows OS can check out this script on Github.
It's a Python+paramiko script that extracts Hive data to local Windows OS file-system.
I want to create update script for BLOB column in Table which stores XSL Data in ORACLE. Can anybody help me in simple way without creating any directory. Here number of character involved is also more than 4000.
I have modified in TOAD by 'Save to File' and again from 'Load to File'. Now I want to transfer it to some other database using SQL Script.
Using the Oracle IMP and EXP utilities you can export a table into a file and import it into another database. Here is some information on how to use them:
http://www.orafaq.com/wiki/Import_Export_FAQ
It is not SQL but it also doesn't involve creating directories.