pev | Postgres Explain Visualizer | Runtime Evironment library

by AlexTatiyants CSS Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | pev Summary

pev is a CSS library typically used in Server, Runtime Evironment, Angular, Nodejs applications. pev has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Postgres Explain Visualizer (dev) is designed to make EXPLAIN output easier to grok. It creates a graphical representation of the plan. You can see it in action at tatiyants.com/pev, or read about it on my blog. Pev is heavily influenced by the excellent explain.depesz.com. Pev is written in angular 2 with TypeScript. The project is based on angular2 seed. It requires npm, gulp, tsd, and compass.

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Support

pev has a medium active ecosystem.

It has 2672 star(s) with 187 fork(s). There are 55 watchers for this library.

It had no major release in the last 6 months.

There are 28 open issues and 18 have been closed. On average issues are closed in 63 days. There are 6 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of pev is current.

Quality

pev has no bugs reported.

Security

pev has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

pev is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

pev releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

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pev Key Features

No Key Features are available at this moment for pev.

pev Examples and Code Snippets

No Code Snippets are available at this moment for pev.

Community Discussions

Trending Discussions on pev

Retrieving Attribute Values from a XML string in Java

Why does the render_template keep on showing the old value of the flask form?

Index-only scan very slow on small table

How do I fill a bar plot with a specific colour palette according to the variables?

Why is my bar plot showing an empty output?

Filtering UNION ALL result is much slower than filtering each subquery

BOOST:ODEINT Sudden Iteration stop

Splitting the big Array into small parts with conditions

Join in data tables (Warning message: In `[.data.table`(dt[dt2 on = .(common_key), : Item 1 of j's result for group 8 is zero length)

Ansible Perform Tasks in localhost on Multiple Hosts

QUESTION

Retrieving Attribute Values from a XML string in Java

Asked 2021-May-25 at 19:21

I have the following XML string

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ANSWER

Answered 2021-May-25 at 19:21

You can do this using jsoup, it pretty simple too. Please look at the comments in the code

Maven:

Source https://stackoverflow.com/questions/67693039

QUESTION

Why does the render_template keep on showing the old value of the flask form?

Asked 2021-Apr-30 at 05:58

I've been searching for an answer for hours. I apologise if I missed something.

I'm using the same form multiple times in order to add rows to my database. Every time I check an excel file to pre-fill some of the wtforms StringFields with known information that the user may want to change.

The thing is: I change the form.whatever.data and when printing it, it shows the new value. But when I render the template it keeps showing the old value. I tried to do form.hours_estimate.data = "" before assigning it a new value just in case but it didn't work.

I will attach here the route I'm talking about. The important bit is after # Get form ready for next service. If there's more info needed please let me know.

Thank you very much.

...

ANSWER

Answered 2021-Apr-30 at 05:58

Well I found a workarround: I send the data outside the form like this:

Source https://stackoverflow.com/questions/67282370

QUESTION

Index-only scan very slow on small table

Asked 2021-Apr-21 at 15:39

I am trying to optimize the following PostgreSQL query:

...

ANSWER

Answered 2021-Apr-21 at 15:39

The way you wrote the query, PostgreSQL has to execute the subquery for every pair of rows in the join. The index-only scan is executed very fast, but way too often.

Rewrite the query in a reasonable way:

Source https://stackoverflow.com/questions/67197750

QUESTION

How do I fill a bar plot with a specific colour palette according to the variables?

Asked 2021-Jan-17 at 17:00

Trying to assing each variable colour by creating my own colour palette, but some of the colours get mixed up. Any ideas on how I should fix this?

...

ANSWER

Answered 2021-Jan-17 at 17:00

As I suggested in my comment you could achieve your result by mapping your categorical var on fill inside aes() and make use of scale_fill_manual:

Source https://stackoverflow.com/questions/65763022

QUESTION

Why is my bar plot showing an empty output?

Asked 2021-Jan-17 at 03:21

I am trying to create a simple bar plot but the output is empty (picture attached) for some reason.

...

ANSWER

Answered 2021-Jan-16 at 20:08

There are two issues - 1) stat would be "identity", 2), the aes is not closed and geom_bar is another layer

Source https://stackoverflow.com/questions/65754143

QUESTION

Filtering UNION ALL result is much slower than filtering each subquery

Asked 2021-Jan-08 at 09:27

I have simple select

...

ANSWER

Answered 2021-Jan-08 at 09:27

Solved the problem by casting each union item that points to krepselis, to same database type.

Source https://stackoverflow.com/questions/65561421

QUESTION

BOOST:ODEINT Sudden Iteration stop

Asked 2020-Nov-04 at 16:40

I'm new in the world of C++ and I'm having some trouble with the boost library. In my problem I want to solve a ODE-System with 5 equations. It isn't a stiff problem. As iterative method I used both integreate(rhs, x0, t0, tf, size_step, write_output) and integreate_adaptive(stepper, sys, x0, t0, tf, size_step, write_output). Both these method actually integrate the equations but giving me non-sense results changing the size of the step from 0.001 to 5 almost randomly. The equations and data are correct. What can I do to fix this problem? Here is the code:

...

ANSWER

Answered 2020-Nov-04 at 16:40

If you read the documentation, then you will find that the constant step-size routines are integrate_const and integrate_n_steps, or possibly integrate_adaptive with a non-controlled stepper.

The short call to integrate uses the standard dopri5 stepper with adaptive step size, so that the changing step size is no surprise. You could possibly use the dense output of the stepper to interpolate values at equidistant times.

Source https://stackoverflow.com/questions/64678595

QUESTION

Splitting the big Array into small parts with conditions

Asked 2020-Oct-18 at 20:24

I need to split below array into three arrays: The result of tc_excel variable

...

ANSWER

Answered 2020-Oct-18 at 20:24

Here is the solution:

Source https://stackoverflow.com/questions/64323983

QUESTION

Join in data tables (Warning message: In `[.data.table`(dt[dt2 on = .(common_key), : Item 1 of j's result for group 8 is zero length)

Asked 2020-Sep-16 at 22:48

I have two data tables --

...

ANSWER

Answered 2020-Sep-16 at 22:48

Some ids are in dt2 that aren't in dt.

Try dt2[!dt, on = 'id'] to see which ones.

You can also just add nomatch = 0 to the initial join to discard them. I.e.

Source https://stackoverflow.com/questions/63797840

QUESTION

Ansible Perform Tasks in localhost on Multiple Hosts

Asked 2020-Sep-08 at 11:39

I'm planning an Ansible playbook which will query version number of specific .exe file on windows hosts, then generate diff version between the version installed on the Windows hosts and the latest version stored on the Ansible controller Linux machine ("localhost"), and deploy the diff version to the Windows hosts.

My playbook looks something like:

...

ANSWER

Answered 2020-Sep-08 at 11:39

So it turns out to be pretty simple: with_items does the trick, and it can be referred later in when as well.

Example:

Source https://stackoverflow.com/questions/63783492

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install pev

You may also need to install tsd and compass:.
To build, run the build command for a specific environment. For example, the following will create a production distribution:.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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