Navicat run SQL file import data incomplete or import failed

Preface :

When we want to import data from one database to another  

Generally, the required data table is dumped sql file And then it runs again sql file Import into the new database

Do it When there is little data, there is usually no mistake  

But if the amount of data is large There are many tables There will be a lack of data tables Or lack of data

Solutions to problems :

Inquire online information to know There are several ways to try to solve  

First of all :

Start with the configuration file of the database

Find... On the server MYSQL Install under directory my.ini file Then go and modify Remember to restart

lookup max_allowed_packet attribute

max_allowed_packet=50M

Or make it bigger

second :

from navicat Modify the database storage size It's a little similar to the first one   I 2 It's all changed

command :

// View the current max_allowed_packet Size

show global variables like 'max_allowed_packet';

// modify max_allowed_packet Size

 set global max_allowed_packet=1024*1024*50;

After the change, check whether the following sizes have changed Change is success

Third :

The code and structure of the imported database and the exported database are different

Modify the table character set synchronization of the database

Fourth : 

Change strict mode , Perform the following sql Then import sql file ;

SET sql_mode = '';

SET GLOBAL sql_mode = '';

Be careful ：

When used "SET sql_mode=''" when ,mysql Clear the default mode information ,

But there is also a problem , It would be mysql No intrusion detection , Error message ,

This requires programmers to sql Be more careful when operating . You can put it sql Add to sql Execute first in the file
 

The fifth : 

When we import data hold " Run multiple queries in each run " Give it right   It will be slower But the data will not conflict Will not let the data be reduced

The sixth : 

This method is a little metaphysical The credibility needs to be investigated You can try everyone

Select run in the database sql file No... Is selected in the table function sql file It will be more accurate

 

The seventh : 

Use the command line to import and export

One 、window Environmental Science

A. export .sql

1. Export the entire database
mysqldump -u user name -p Database name > Exported file name

mysqldump -u dbuser -p dbname > dbname.sql

2. Export a table
mysqldump -u user name -p Database name Table name > Exported file name

mysqldump -u dbuser -p dbname users> dbname_users.sql

3. Export a database structure
mysqldump -u dbuser -p -d --add-drop-table dbname >d:/dbname_db.sql
-d No data --add-drop-table At every create Add a... Before the statement drop table

B. Import .sql

Commonly used source command
Get into mysql Database console , Such as
mysql -u root -p
mysql>use database
And then use source command , The following parameters are script files ( As used here .sql)
mysql>source d:/dbname.sql

1. Import data into database
   mysql -uroot -D Database name

2. Import data into a table in the database
   mysql -uroot -D Database name Table name

Two 、linux Environmental Science

A. export .sql

Export database with mysqldump command （ Be careful mysql Installation path for , The path of this command ）：
1、 Export data and table structure ：
mysqldump -u user name -p Parameters ( Optional ) Database name >/home/sql/ Database name .sql

mysqldump -u root -p --default-character-set=utf8 db_name>/home/sql/fileName.sql

You will be prompted to enter the password after pressing enter

2、 Export only table structure
mysqldump -u user name -p password -d Database name > Database name .sql

/usr/local/mysql/bin/ mysqldump -uroot -p -d abc > abc.sql

notes ：/usr/local/mysql/bin/ —> mysql Of data Catalog

B. Import .sql

1、 First, build an empty database

mysql>create database abc;

2、 Import database
Method 1 ：
（1） Select database

mysql>use abc;

（2） Set database encoding

mysql>set names utf8;

（3） Import data （ Be careful sql Path to file ）

mysql>source /home/abc/abc.sql;

Method 2 ：
mysql -u user name -p Parameters ( Optional ) Database name < Database name .sql

mysql -uabc_f -p--default-character-set=utf8 abc < abc.sql

The eighth : 

No use. See the latest navicat12 Functions of the belt

Data transmission and data synchronization Structure synchronization Open the interface and have a look Simpler violence

 

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If none of the above has solved your problem

You can try a simple and violent method If there is not much data to import

You can put sql Open the file directly and go to navicat Directly inside Inquire about -> New query   Then input sql

See where the error is reported Then modify it accordingly

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