How to import mysql.txt.The following are the general steps to import the txt-file into the mysmysoul database:
1. Create the test table and prepare the data:
- First, create a table for receiving data. For example, create a table called person, which contains id (self-increment and not empty), name (not empty), age, city, salary, and other fields. The example creation statement is: createtableperson(idintnotnullauto_increment,namevarchar(40)notnull,age int,cityvarchar(20),salaryint,primarykey(id))engine = innodb charset = gb2312;
- Prepare a txt-file, such as c:/data.txt. The data format is separated by the Tab key between each item. If the field is blank, it is represented by/N. For example, Zhang San 31 Beijing 3000, Li Si 25 Hangzhou 4000, etc.
2. Data import:
- Use the load data local infile 'c:/data.txt' into table person(name,age,city,salary); command to import the data from the txt-file into the table, where local means local. After executing this command, the data of the Null-class will also be imported correctly.
- Note that the default separation between fields and records (rows) is/t (that is, Tab) and/n, but it can be changed, such as using Fields Terminated By ','(fields are separated by,), Lines Terminated By ';'(records are separated by,) and other settings. At the same time, it is also important to note that the line break of other operating systems may be different from that of windows.
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import data from txtls into mysqlThere are the following ways to import the data in TMT into MysQL:
1. Create a new table, add a line of template data in the first line of the text file (if you don't add it, the import may be wrong), then right click import ward to import txy, then set the partition field (with space or/according to the situation), then set the corresponding attribute corresponding value, and finally check whether the data is correct and whether the amount of data is missing.
2. You can also use the command to import it. For example, if the table tt format is Create Table `tt` ( `ind` int NOT Empty auto_increment, `name` char100) default Empty, Primary Key (`ind`) ), the contents of the file d.txt. For example, 1, a2, b3,c, and the import command is: mysql> load data infile 'd.txt' into table tt -> fields terminated by',' -> lines terminated by'\r\n'. Points to note:
- You can use an absolute path for the file, such as 'c:/d.txt'. Otherwise, please place the file in the root of the database.
- Because the fields are separated by commas, the fields must be terminated by',' or the import will fail.
- Because the lines are separated by "\r\n" in Winwindows, it must be lines terminated by "\r\n". If you don't set this argument, the import can also be successful, but there will be an additional "\r" control character. The field may not be seen in the visual mysticism tool, but it will be obviously confused in the mysmysticism command line.
- If the table tt is not empty and the ind value in the file is repeated in the table, an error will be prompted and the import will fail. If only the name field is imported, the content of the file d.txt. is abc, and the import command is: mysqlgtload data infile 'd.txt' into table tt -> lines terminated by'\r'-> (name). The load data command also supports more complex text format, file code, etc. You can refer to the official document.
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The problem of storing large chunks of text into the mysQL databaseYou can store large chunks of text in the Mystical database using an SQL statement.
Suppose there is a text file called text, which contains a large chunk of text that needs to be stored. You can store the contents of the text file in the mysmysticism database using the following SQL statement:
```
INSERT INTO text_table (column1 column2 column3 )
VALUES (value1 value2 value3 );
```
Where text_table is a table name used to store text data, column1, column2, column3, etc. are column names used to store corresponding text data, value1, value2, value3, etc. are actual values used to store corresponding text data.
When executing the above SQL statement, the contents of the text file need to be passed to the SQL statement as variables of actual values such as value1, value2, and value3.
If the text file contains multiple sections, you can store each section on a separate line and use a terminator to group these lines in the SQL statement. For example:
```
INSERT INTO text_table (column1 column2 column3 )
VALUES (value1 value2 value3 ' ' ' ');
```
This will create a table called text_table with the following columns:
- column1
- column2
- column3
- value1
- value2
- value3
- separator
In the example above, the separating character is a commas separating each paragraph.
It is important to note that when storing large chunks of text in the Mystical database, you need to consider the character set and the code. It was necessary to ensure that the database character set was consistent with the text file character set and that the text data was stored using the correct encryption method.
How many words can text store in mysql?In Mystical, the text type can store text data of any length without a maximum storage capacity limit. However, in order to ensure the accuracy and legibility of the data, it is usually recommended to compress the text data into a smaller file format to reduce the storage space requirements. The space that can be used in Mystical to store a character set. The character set includes all possible characters. A character set can contain one or more characters. Each character takes up one syllable. Therefore, a 100-character text data may actually take up more storage space than it actually needs because each character takes up a bit of space.
How to save a document with a lot of text into the mysql databaseTo save a document with a lot of text into the mysmysticism database, you can follow these steps:
Create a database and create a table to store the content and titles of the document. For example, you can create a table called content that contains the following fields:
- content_id (The primary key will automatically increment the id)
- title
- author_id (Foreign key points to the author ID of the document)
- language
- timestamp
2 Create a new document and add it to the content table. You can add the contents of the document to the table using an SQL statement. For example, you can create a new document using the following SQL statement:
```
INSERT INTO content (content_id title author_id language timestamp)
Values (1'document title'1 'Chinese' now())
```
This will create an auto-increment row named 1 in the content table and add the document title, author ID, language, and creation time to the table.
Write a program or script to extract the content of the document from the browser and write it to a text file. The text file was then written to the local disk and compared to the contents of the document in the database to ensure that the contents of the document matched the contents in the database.
4. If necessary, you can paginate the content of the document to better organize and manage the document.
5. Periodically back up and restore the database to ensure the safety and reliability of the data.
These are the basic steps to store a document with a lot of text in the Mystical database. The specific implementation method may vary according to the specific situation and needs to be adjusted according to actual needs.
Is it better to save the collected articles in mysql database or generate files?The answer to this question depends on many factors, including how you plan to deal with this data and how you use a database or file to store it.
If you plan to save the collected articles in a database for later analysis and processing, then a database may be a better choice. The database can provide high expansibility, high reliability, and efficient query capabilities to support large-scale data storage and processing. In addition, the database also supports a variety of data management tools and applications that can help you manage and query your data.
However, if you plan to generate a file of collected articles for direct storage on a local computer or mobile device, generating a file may be a better choice. Creating files allows faster access and editing of data and makes it easier to share files with others. In addition, generating files can reduce the need for a database because you don't need to use a database to store and process data.
In summary, the choice to save the collected articles in the database or generate a file depends on your specific needs and usage.
Are there any Tamil sex stories in Tamil literature?Tamil literature has a long and glorious history with many great works. These works are centered around noble values, cultural heritage, and the expression of complex emotions. The idea of 'Tamil sex stories' is quite inappropriate as it goes against the traditional values and the nature of Tamil literary works. There are no such stories in the realm of legitimate Tamil literature.
Are there any Gay Sex Tamil Stories in Tamil literature?There might be some stories in Tamil literature that touch on same - sex relationships, but they may not be explicitly called 'gay sex' stories as such terms are more modern. Tamil literature is rich and diverse, and there could be stories that explore deep emotional bonds between same - sex characters in a more subtle and cultural context.
3 answers
2024-11-08 21:06