PHP + MySQL insert operation instance, phpmysql insert instance. PHP + MySQL insert operation instance. phpmysql insert instance this article describes the implementation of PHP + MySQL
Use batch insert to solve the insert throughput problem of MySQL.
Recently I used a very simple and easy-to-use method to solve the insert throughput problem in the business. Here I will summarize it.
First, let's clarify that the insert throughput is not the IPS (
Tags: c file data a set SQLRecently in the production of an installation package, need to install the time to execute the MySQL script, do a batch, but found that always execute to insert Chinese when the error, or insert Chinese is garbled.Online check a lot of information, said is to change the code to GBK what, after all, still unsuccessful.Finally, after many
first, recommend a blog: http://www.cnblogs.com/sunzn/archive/2013/03/14/2960248.htmlAt that time, after I installed the MySQL database, after a new database to insert data, the first occurrence of the Chinese can not insert the MySQL database problem, the solution is as follows:Modify sql-mode="strict_trans_tables,no_
In MySQL, inserting (insert) A record is simple, but some special applications, before inserting a record, need to check whether the record already exists, only if the record does not exist to perform the insert operation, this article describes the solution of this problem.question: I created a table to hold the customer information, I know I can
Help! PHP mysql Insert long string does not insert the problem.
The statement is this:
$sql = "INSERT into ' {$table->column_list_page} ' set nid= ' {$_request[' NodeID '} ', title= ' {$_request[' Title ']} ', Author= ' {$_request[' Author '} ', content= ' {$_request[' Content ']} ', note= ' {$_request[' Note ']} ', ed
When the phone field is set to unique in mysql, insert an SQL statement with the same phone number as if a record is successfully inserted, instead of returning an insert error! What should I do? {code...} mysql sets the phone field to unique and inserts an SQL statement with the same phone number as a record if a reco
This article describes in detail how to prevent repeated mysql insert records. if you are interested, you can refer to many methods to prevent repeated mysql insert records. ignore is commonly used, replace, on duplicate key update, of course we can also judge in php.
Solut
INSERT a row record (INSERT) into a MySQL data table INSERT new data using the INSERT statement
Syntax: INSERT [INTO] tbl_name [(col_name,...)] VALUES (pression ,...),...
INSERT [IN
would like these SQL to be exported from MySQL, should not be wrong, but the execution of the time error [ERR] 1064-partition table, insert must provide columnlist Look for the SQL to provide an indication of what to insert, but I am all-column inserted, so I don't understand why?3, the solution:I added all of the above, and found that add success:INSERT into
The statement is this:
$sql = "INSERT into ' {$table->column_list_page} ' set nid= ' {$_request[' NodeID '} ', title= ' {$_request[' Title ']} ', Author= ' {$_request[' Author '} ', content= ' {$_request[' Content ']} ', note= ' {$_request[' Note ']} ', editor= ' {$_session[ ' Adminuserinfo ' [' Auserid ']} ', Time= '. Time (). "'";
$db->query ($sql);}
There is no problem inserting several pages of characters when inserting more than 10 pages of d
Tags: uniqueness mysq field index Sep round UNION ALL add duplicatesWhen inserting one or more records in MySQL, the value of a field is required to be unique, but the field does not add a unique index, which can be resolved by the from dual. SELECT * FROM (Select ' 2015080109 ' a,2 b,4 c,5 D from dualUnionSelect ' 2015080106 ' a,2 b,4 c,5 D from dual) A Where not EXISTS (select Lottery_no from User B where a.a = B.lottery_no)
Import text files to mysql database tables and insert commands to insert data to tables
1. Import a text file to a database TABLE: mysql> load data local infile 'text path 'into TABLE name; example: mysql> load data local infile 'd: /pet.txt 'into TABLE pet;
Mysql to prevent repeated insert record summary, mysql to prevent insertion Summary
Summary of methods for preventing repeated insert records in mysql
There are many methods to prevent repeated inserts of records in mysql.
What happens when I insert two of them when I execute MySQL insert?
This post was last edited by eason_____________ on 2013-07-25 11:25:44
Do a phone upload image to the server function. But get to execute INSERT statement to execute two times!
index.php
Header ("content-type:text/html; Charset=utf-8 ");mysql_co
Label:Note that you cannot omit any of the fields in the table. Include self-increment ID The principle is "table interpolation table" INSERT intoprod_attrSelectA.* from
(
SELECT
5 asprod_id,1 asattr_id,'China Press' asAttr_valueUNION
SELECT
5 asprod_id,2 asattr_id,'Tsinghua Press' asattr_value) as
INT UNSIGNED NOT NULL AUTO_INCREMENT, NAME CHAR(40) NOT NULL DEFAULT '', age INT NOT NULL DEFAULT 0, info CHAR(50) NULL, PRIMARY KEY (id))INSERT INTO person_oldVALUES (11,'Harry',20,'student'),(12,'Beckham',31,'police')SELECT * FROM person_old
As you can see, the record is successfully inserted, and person_old is represented in two records. Next, insert all the records in the person_oldperson_old table to
Sharing bitsCN.com locks for fast insertion of large data volumes in MySQL and statement optimization will also reduce the overall time for multi-connection testing, although the maximum wait time for them to wait for locking will increase. For example:
Connection 1 does 1000 inserts
Connections 2, 3, and 4 do 1 insert
Connection 5 does 1000 inserts
If no lock is used, 2, 3, and 4 are completed before
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.