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Cannot truncate table because it is being referenced by a FOREIGN KEY constraint?
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edited May 23 '17 at 12:10
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answered Oct 31 '08 at 15:08
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MySQL selecting yesterday's date
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168
The simplest and best way to get yesterday's date is:
subdate(current_date, 1)
Your query w...
SQL: How to properly check if a record exists
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It's better to use either of the following:
-- Method 1.
SELECT 1
FROM table_name
WHERE unique_key = value;
-- Method 2.
SELECT COUNT(1)
FROM table_name
WHERE unique_key = value;
The first alternative should give you no result or one result, the second count should be zero or...
How to remove leading and trailing whitespace in a MySQL field?
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11 Answers
11
Active
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Highlight the difference between two strings in PHP
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13 Answers
13
Active
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How to convert 1 to true or 0 to false upon model fetch
...th true or false into a boolean/tinyint field in the database, which uses 1 or 0 .
4 Answers
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Remap values in pandas column with a dict
I have a dictionary which looks like this: di = {1: "A", 2: "B"}
10 Answers
10
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What is the ultimate postal code and zip regex?
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132
There is none.
Postal/zip codes around the world don't follow a common pattern. In some count...
DaffyMenu 扩展：弹出菜单扩展，为组件添加弹出式菜单功能 · App Inventor 2 中文网
...单选项和自定义配置。
包名：com.gordonlu.daffymenu
版本：1
发布日期：2022年3月31日
下载链接
扩展文件：
com.gordonlu.daffymenu.aix
demo:
Test.aia
功能概述
扩展特性
弹出式菜...