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SQL keys, MUL vs PRI vs UNI
...u can issue
show create table <table>;
To see more information about the table structure.
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Check if table exists in SQL Server
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Given that an object name alone (that is, without a schema) is not guaranteed to be unique, there is no 100% failsafe way to do this. If you are working with a DB that has no naming conflicts across schemas then simply omitting the "TABLE_SCHEMA = 'TheSchema'" will work...
How to print a string in fixed width?
...ou should perhaps mention that negative numbers give left-justified padded output; this is hardly intuitive for a beginner.
– tripleee
Oct 14 '12 at 6:27
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Quick and easy file dialog in Python?
...you don't want to have any other dependencies.
To show only the dialog without any other GUI elements, you have to hide the root window using the withdraw method:
import tkinter as tk
from tkinter import filedialog
root = tk.Tk()
root.withdraw()
file_path = filedialog.askopenfilename()
Python 2...
What is the difference between :focus and :active?
...n you tab to cycle through focusable elements, they will enter :focus (without active).
When you click on a non-focusable element, it enters :active (without focus).
When you click on a focusable element it enters :active:focus (active and focus simultaneously).
Example:
<div>
I cannot be...
How can I visualize per-character differences in a unified diff file?
...Angel You could open Emacs and type M-! to run the command and capture the output in a buffer.
– legoscia
Oct 19 '18 at 11:31
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Delete local Git branches after deleting them on the remote repo
...nd. However, since branch is a porcelain and not a plumbing command, watch out for any UI changes in future versions of Git that may break it.
– user456814
Aug 1 '13 at 12:43
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ImageView - have height match width?
...This is the new way to do it:
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="wrap_content"
android:layout_height="0dp"
app:layout_constraintDimensio...
How do I change permissions for a folder and all of its subfolders and files in one step in Linux?
...be familiar with man. I only know of it's existence, but trying to figure out how to use it would require a google adventure in and of itself. Possibly a worthwhile venture, but you should realize that I found THIS VERY post via google and it answered the EXACT question I was asking. Resources, m...
Generate random number between two numbers in JavaScript
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While this would work, @Mike, it would be best to point out the more generic version as Francisc has it below :-).
– Raymond Machira
Aug 5 '13 at 14:38
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