A "GENERIC" query paging class that can query all tables recently had the whim to write a query pagination class that can be used for all tables. Because in the actual development, I am afraid that the query and the result set pag
A "common" query paging class that can query all tables in PHP
A "common" query paging class that can query all tables?Recently, I wanted to write a page class that could be paged for all
A "common" query paging class that can be used to query all tables
In a recent whim, I hope to write a paging class that can be used to query all tables. In actual development, I am afraid that the most frequently used code is to query
A "common" query paging class that can be used to query all tables
In a recent whim, I hope to write a paging class that can be used to query all tables. In actual development, I am afraid that query and display result sets by p
Label:Recently encountered a more interesting problem in the project, the online search for some methods, summarized here to share. We often encounter such a scenario: the need to query data, there are some query conditions, but when the query, we hope that when a condition is empty, then do not filter this condition, the main idea is to deal with the following:
I haven't submitted a query yet. Every time you open this page, all the data from the user table is displayed. This is not the case if you don't use a fuzzy query.
$sql="SELECT * FROM user WHERE name like '%{$name}%'";
Reply content:
I haven't submitted a query yet. Every time you open this page,
| 10;20;20 | | 2 | 20| | 3 | 200;500 |+------+----------------------------------+3 rows in Set (0.00 sec) is grouped by ID, printing the value of the de-redundant name field on one line, separated by commas mysql> Select Id,group_concat (Distinct NAMe) from the AA group by id;+------+-----------------------------+| id| Group_concat (distinct name) |+------+-----------------------------+|1 | 10,20| | 2 | 20 | | 3 | 200,500 |+------+-----------------------------+3 rows in Set (0.00 sec) is groupe
' SET t_codevalue = null; /* Allow recursion depth */If Layer>0 ThenOPEN Cur1;FETCH cur1 into T_id,t_codevalue,t_name,t_pid;While (T_codevalue was not null)Do/* Core Data collection */INSERT into tmp_table values (T_ID,T_CODEVALUE,T_NAME,T_PID);Call Sp_iterativeaddress (T_CODEVALUE,LAYER-1);FETCH cur1 into T_id,t_codevalue,t_name,t_pid;END while;End If;END-Method Five SQL implements SELECT ' name ', Code_value as code_value,pid as parent ID, levels as parent to child progression, paths as paren
I believe you will not be familiar with MySQL query. The following describes how to use MySQL query to query all articles published on the current day. I hope it will help you learn about MySQL query.
Code:
/*
*Author:Fanglor
*Email:Fanlor@163.com
*Url:www.s
Label: style blog color ar OS for SP data Div
All data can be queried when you enter the [%] character in development.
Solution: parameterized query + input box data processing.
Input box data processing:
///
In the query input box, enter "%" to query all result
PHP Query Results paged Display, click on the next page can not remember the query, just click on the next page, the result is all the data.
Get Select Value$select _value = isset ($_get[' select ')? $_get[' SELECT ']: ';echo $select _value;Execute Query SQLif ($select _value== "") {_page ("Select o_id from T_order"
cotyledons (as a whole) cannot be included in my student's corresponding list of the ID of the course*/SelectTblcourse. CourseID fromTblcoursewhereTblcourse. Teaid=(SelectTblteacher. Teaid fromTblteacherwhereTblteacher. Teaname='cotyledons'--find out the ID of cotyledons teacher) andTblcourse. CourseID not inch(SELECTTblscore. CourseID fromTblscoreWHERETblscore. Stuid=St. STUID))Here is a description of not exists.not EXISTS(... )。。。 The result is that it returns true, but because it is not, it
('Maitreya Buddha','Buddhist', -), +('Buddha Buddha','Buddhist', -), A('Buddhist Bodhisattva','Buddhist', -), the('The Buddha','Buddhist',101)--For convenience, add 1 points to the Bodhisattva + - Insert intoDaojiateacher $ Values('nu wa Niang','Taoism', -), $('Yangmn greedy wolf too star June','Taoism',101), -('Yin Jing giant door Yuan Xing June','Taoism',101), -('Live Lu, the true star','Taoism',101), the('Xuan Ming Wen qu new star June','Taoism',101) - Wuyi the Select * fromDaojiat
Mysql statement to delete duplicate data, retain one; query all duplicate data; query duplicate data, mysql statement
// Display all duplicate entries
SELECT * FROM Table NameWHERE (Field 1, Field 2 ,...)IN (SELECT Field 1, Field 2,... FROM table name group by field 1, Field 2,... having count (*)> 1)
// Only one
SELECT Table name = case If A.colorder=1 then d.name else ' end, table description = case when a.colorder=1 then IsNull ( F.value, ') Else ' end,--field ordinal = a.colorder, field name = A.name, identity = case when ColumnProperty ( A.id,a.name, ' isidentity ') =1 then ' √ ' else ' end, primary key = case if exists (SELECT 1 from sysobjects where xtype= ' P K ' and Parent_obj=a.id and name in (the select name from the sysindexes WHERE indid in (select Indid from Sysindexkeys WHERE id = a.
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