logo
down
shadow

Find the rows of data in a database


Find the rows of data in a database

By : user2954373
Date : November 22 2020, 01:01 AM
like below fixes the issue It looks like you're using the channels_Index variable to refer to the ith channel, sorted alphabetically in ascending order. In a database, there is no guaranteed sort order, so you would have to figure out the name of the ith channel first. The pure SQL way would be to use a query that explicitly sorts the data; for example, this query would get you the third channel, in alphabetical order:
code :
SELECT DISTINCT channel FROM programs ORDER BY channel ASC LIMIT 1 OFFSET 2;
cur.execute('SELECT DISTINCT channel FROM programs;')
channel_list = sorted(row[0] for row in cur.fetchall())
cur.execute('SELECT title, start_date, stop_date FROM programs WHERE channel=?;',
            (channel_list[self.channels_Index],))


Share : facebook icon twitter icon
How to find unique rows from a Ruby variable containing database rows

How to find unique rows from a Ruby variable containing database rows


By : Prakash Dhanani
Date : March 29 2020, 07:55 AM
will help you I have these line of code in Ruby: , You can try the following:
code :
@mastertest = connection.execute("select distinct code_ver, suite, date from mastertest where code_ver = "#{@variable}")
Apply over rows of data.table: find rows where a subset of columns are all NA

Apply over rows of data.table: find rows where a subset of columns are all NA


By : David
Date : March 29 2020, 07:55 AM
With these it helps My approach would be as follows:
Use rowSums to find the rows you want to keep:
code :
Dose <- grep("dose", colnames(DT1))
# .. menas "up one level
Flag <- rowSums(is.na(DT1[, ..Dose])) != length(Dose)
DT1[Flag]
Database spit out only specific ID's rows data from list of links instead of ALL rows in database

Database spit out only specific ID's rows data from list of links instead of ALL rows in database


By : dotn
Date : March 29 2020, 07:55 AM
PostgreSQL query to find rows with matching data and combining columns from those rows

PostgreSQL query to find rows with matching data and combining columns from those rows


By : user1927700
Date : March 29 2020, 07:55 AM
I wish this help you I am using PostgreSQL and have a table like this which shows users, items and review scores to item given by the user (it is possible for a user to give more than one scores to a specific item): , A typical join will do:
code :
select 
    t1.name, t2.name, t1.item, t1.score
  from mytable t1
  join mytable t2 on t1.item = t2.item and t1.score = t2.score
  where t1.name <> t2.name
select 
    t1.name, t2.name, t1.item, t1.score
  from mytable t1
  join mytable t2 on t1.item = t2.item and t1.score = t2.score
  where t1.name < t2.name
How to find rows in a MySQL database that don't correlate correctly with other rows

How to find rows in a MySQL database that don't correlate correctly with other rows


By : Nguyen trong Phiem
Date : March 29 2020, 07:55 AM
With these it helps What you need is a join. If you join the table on itself with the owned on owner.
Related Posts Related Posts :
  • Remove commas in a string, surrounded by a comma and double quotes / Python
  • How to chain Django querysets preserving individual order
  • Comparison with Python
  • How to find backlinks in a website with python
  • Return new instance of subclass when using methods inherited from parent class in Python
  • Which function in django.contrib.auth creates the default model permissions?
  • Formatting text in tabular form with Python
  • How to determine the first day of a month in Python
  • Error while converting date to timestamp in python
  • Python string iterations
  • Is there any file number limitation when you select multiple files with wxFileDialog?
  • Errors with Matplotlib when making an executable with Py2exe (Python)
  • Django Haystack - Indexing single field
  • Go Pro Hero 3 - Streaming video over wifi
  • Appending a column in .csv with Python/Pandas
  • How to change my result directory in Robot framework using RIDE?
  • problem with using pandas to manipulate a big text file in python
  • python-magic module' object has no attribute 'open'
  • Where goes wrong for this High Pass Filter in Python?
  • Why inserting keys in order into a python dict is faster than doint it unordered
  • flann index saving in python
  • Create new instance of list or dictionary without class
  • How can I easily convert FORTRAN code to Python code (real code, not wrappers)
  • Address of lambda function in python
  • Python adding space between characters in string. Most efficient way
  • python http server, multiple simultaneous requests
  • Disguising username & password on distributed python scripts
  • Post GraphQL mutation with Python Requests
  • Why doesnt pandas create an excel file?
  • Rolling comparison between a value and a past window, with percentile/quantile
  • How to avoid repetitive code when defining a new type in python with signature verification
  • How to configure uWSGI in order to debug with pdb (--honour-stdin configuration issue)
  • In Python, how do you execute objects that are functions from a list?
  • Python- Variable Won't Subtract?
  • Processing Power In Python
  • Python 2.7.2 - Cannot import name _random or random from sys
  • Why doesn't the Python sorted function take keyword order instead of reverse?
  • Make a function redirect to other functions depending on a variable
  • get_absolute_url in django-categories
  • Monitoring non-Celery background task with New Relic in Python
  • Feature selection with LinearSVC
  • LSTM - Predicting the same constant values after a while
  • Test the length of elements in a list
  • Django: render radiobutton with 3 columns, cost column must change according to size & quantity selected
  • Python class attributes vs global variable
  • sys.stdout.writelines("hello") and sys.stdout.write("hello")
  • is ndarray faster than recarray access?
  • Python - search through directory trees, rename certain files
  • GAE: How to build a query where a string begins with a value
  • TypeError: __init__() takes at least 2 arguments (1 given)
  • Overriding and customizing "django.contrib.auth.views.login"
  • Django : Redirect to a particular page after login
  • Python search and copy files in directory
  • pretty printing numpy ndarrays using unicode characters
  • Frequent pattern mining in Python
  • How can I make a set of functions that can be used synchronously as well as asynchronously?
  • Convert one dice roll to two dice roll
  • count occourrence in a list
  • Writing an If condition to filter out the first word
  • to read file and compare column in python
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org