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Get all table names of a particular database by SQL query?
...working on application which can deal with multiple database servers like "MySQL" and "MS SQL Server".
19 Answers
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Quick and easy file dialog in Python?
... 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 variant:
import Tkinter, tkFileDialog
root = T...
How to see indexes for a database or table in MySQL?
...wered Mar 6 '11 at 21:05
RolandoMySQLDBARolandoMySQLDBA
40.5k1515 gold badges8181 silver badges124124 bronze badges
...
Return 0 if field is null in MySQL
In MySQL, is there a way to set the "total" fields to zero if they are NULL?
5 Answers
...
JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...-r -v rt.pack rt.jar
To recursively unpack all .pack files, from the JRE root run:
for /r %f in (*.pack) do "%JAVA_HOME%\bin\unpack200.exe" -r -q "%f" "%~pf%~nf.jar"
*nix
To unpack one .pack file (for example rt.pack), run:
/usr/bin/unpack200 -r -v rt.pack rt.jar
To recursively unpack all ....
MySQL - UPDATE multiple rows with different values in one query
...
Excuse my english sir, when i try to make an update mysql give me the error: # 1062 - Duplicate entry 'XXX' for key 'PRIMARY'. That does when I try to update a record with the same value it already had, is there any way to skip the update if the current value is the same as be...
Convert a Git folder to a submodule retrospectively?
...ven though I have tested this successfully)!
0. Preparation
Variables
# Root directory where repo-org lives
# and a temporary location for git filter-branch
root="$PWD"
temp='/dev/shm/tmp'
# The old repository and the subdirectory we'd like to extract
repo_old="$root/repo-old"
repo_old_directory...
ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注IT技能提升
...tialize方法前，需要手动释放所有的全局或者静态变量。
如何手动释放呢：
设置指针指向NULL
调用Release方法，注意是要调用智能指针的Release方法，而不是内部指针的，指针指针的Release方法，会调用内部指针的Relase，然后设...
ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注IT技能提升
...tialize方法前，需要手动释放所有的全局或者静态变量。
如何手动释放呢：
设置指针指向NULL
调用Release方法，注意是要调用智能指针的Release方法，而不是内部指针的，指针指针的Release方法，会调用内部指针的Relase，然后设...
ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注IT技能提升
...tialize方法前，需要手动释放所有的全局或者静态变量。
如何手动释放呢：
设置指针指向NULL
调用Release方法，注意是要调用智能指针的Release方法，而不是内部指针的，指针指针的Release方法，会调用内部指针的Relase，然后设...