1. Index basic index type: 1. Ordinary index: Created into any data type 2. Unique index: Limit the index value to be unique 3. Full-text index: Can only be created on char, varchar, text type fields. Mainly used to improve text query speed. MyISAM engine support. 4. Single-column index: Create an index for a single field in the table 5. Multi-column index: Create an index for multiple fields 6. Spatial index: Create using spatial parameters to provide the system with the efficiency of obtaining control data. Basic operations of the index: CREATE TABLE t_user1( id INT , &n
1. MySQL database optimization (4) - MySQL index optimization
##Introduction: 1. Index basic index type: 1. Ordinary index: Create into any data type 2. Unique index: limit the index value to be unique 3. Full-text index: can only be created into char, varchar, For text type fields, it is mainly used to improve text query speed. MyISAM engine support. 4. Single column index: Create an index for a single field in the table 5. Multi-column index: Create an index for multiple fields 6. Spatial index: Use
2. JavaScript Document Object Model-Text type
##Introduction:
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Solution to why Text type fields in MSSQL database are truncated in PHP
Introduction: In PHP The MSSQL database was used in the database, and it happened that the Text type field was used in the database, so the problem arose. Every time I query the data from the database, it is always truncated inexplicably. At first, I thought that the PHP framework I used had a limit on the length of the string. Later I found that this was a stupid idea, because when submitting the data, I could Submit all the string contents to the database, but this phenomenon only occurs when reading, so I searched online to see if there are similar problems. I was pretty lucky. I found the solution on my first search, so I decided to post it on my blog. ...
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In MSSQL database Solution to Text type field being truncated in PHP
## Introduction:: This article mainly introduces MSSQL Students who are interested in PHP tutorials can refer to the solution for the Text type field in the database being truncated in PHP.
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realtek high definition audio mysql analysis summary of the differences between InnoDB and MyISAMIntroduction: realtek high definition audio :realtek high definition audio Summary of the analysis of the differences between InnoDB and MyISAM in mysql: MyIASM is a new version of the IASM table, with the following extensions: Binary level portability. NULL column index. There is less fragmentation than ISAM tables for variable-length rows. Large files are supported. Better index compression. Better keys? Statistical distribution. Better and faster auto_increment handling. The following are some details and specific implementation differences: 1. InnoDB does not support FULLTEXT type indexes. 2.
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What is the difference between MyISAM and InnoDB of mysql? How to optimize MYSQL database? , myisaminnodb_PHP tutorialIntroduction: What is the difference between myISAM and InnoDB for mysql? How to optimize MYSQL database? ,myisaminnodb. What is the difference between mySQL's MyISAM and InnoDB? How to optimize MYSQL database? , myisaminnodb The basic differences between MyISAM and InnoDB 1.InnoDB does not support FULLTEXT type indexes. 2.InnoDB is not guaranteed
7. What field type is better to use to store the data generated by ueditor in the database?
Introduction: When reading online information, use text type to affect efficiency. What field type is generally used to store image and text formats?
8. Please tell me how to update the data of the text field type in mysql database
Introduction: How to update the data of text field type in mysql database? The content field of the following statement is of text type. I used UPDATE table SET title='dhl333',content=CONCAT(content,'33333') WHERE article_id=15 and found that the content of the content field is continuously superimposed instead of replaced. What I want Replace
9. php operates mysql to insert data
Introduction: php operates mysql to insert data 1. table_arr[] What is saved here is the html code. Used to display tables on web pages. 2. The fields in the database that store the code snippets in table_arr[] use the text type. My problem is that if there is one more $table_arr[] content saved, such as outstanding_thesis_tab, the insertion operation cannot be performed. Otherwise it's ok. I want to know what the problem is. $first_s
10. freebsd php5.3 pdo_odbc query sql server varchar category text type is not displayed
Introduction: freebsd php5.3 pdo_odbc query sql server varchar type text type is not displayed This post was last edited by jingyanlei on 2013-08-21 14:42:55 ‐ . Code: $conn&nb
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