When media queries are developed on the mobile terminal, it is an effective way to handle page compatibility. A media query consists of an optional media type and zero or more expressions that use
Tag: inquiry
Hadoop – Hive query stays 99%
I use left join to insert records in Hive. When I set limit 1 query, but for all record queries, it stays at 99% to reduce jobs.
Insert overwrite table tablename select a.id, b.name from a le
Hive Advanced Query 1
hadoop hive advanced query select basics 1.0 general query
1)select * from table_name< /p> 2)select * from table_name where name=’….’ limit 1;
1.1cte and nested query
1)with t a
NHibernate query order random
I am trying to write a query that returns randomly sorted results. I found this article Linq Orderby random ThreadSafe for use in ASP.NET gave me some basic clues how to do this. But I get the foll
Lua Trimage Operator – Multiple variables
Suppose I want to assign two values to two variables when a certain condition is true, and two different values if the condition is false. I will assume it will be like this Do:
a, b = 4>
Inno-Setup – Innosetup Uninstall Ask News – Pascal Coding
I created an installer for some of my games, and I want the uninstaller to be able to ask me if I want to save my game files.
Things like this: when I execute uninstall. The exe asked me’Do you wa
MySQL query
Basic query:
select * from table name;
Basic condition query:
select * from Table name where conditions;
Fuzzy query:
select * from table name where name …like ‘%devic
Is ‘Is Distinct from’ Is a real mysql operator?
In a book, I saw this syntax:
SELECT * FROM inw WHERE id IS DISTINCT FROM 4; But I received an error:
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that cor
MySQL advanced query
1. The grouping field is merged from multiple lines into one line.
mysql> select user_id,tag_id from yyfax_user.user_tag where user_id=‘U000412280’;
+————+———-+
| user_id | ta
Is there a problem with the JavaScript unsigned shift operator on the iPad?
I accidentally ran into the Safari JavaScript engine which seems to be a very strange bug on the iPad.
Unsigned shift operator>>> It should be a number shifted to the right. I encountered som