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Should I use text or VARCHAR MySQL?
TEXT has a fixed max size of 2¹⁶-1 = 65535 characters. VARCHAR has a variable max size M up to M = 2¹⁶-1 . So you cannot choose the size of TEXT but you can for a VARCHAR . The other difference is, that you cannot put an index (except for a fulltext index) on a TEXT column.
What is the importance of MySQL full-text search?
Full-Text Search in MySQL server lets users run full-text queries against character-based data in MySQL tables. You must create a full-text index on the table before you run full-text queries on a table. The full-text index can include one or more character-based columns in the table.
What is the advantage of a full text search?
Users searching full text are more likely to find relevant articles than searching only abstracts. This finding affirms the value of full text collections for text retrieval and provides a starting point for future work in exploring algorithms that take advantage of rapidly-growing digital archives.
What’s the difference between varchar and text in MySQL?
MySQL imposes a limit of 65,535 bytes for the max size of each row . The size of a VARCHAR column is counted towards the maximum row size, while TEXT columns are assumed to be storing their data by reference so they only need 9-12 bytes.
Which is better, smaller varchar or larger text?
For smaller limits in VARCHAR, there are some advantages over TEXT. “smaller” means 191, 255, 512, 767, or 3072, etc, depending on version, context, and CHARACTER SET. Intermediate tables created by complex SELECTs are handled in two different ways — MEMORY (faster) or MyISAM (slower).
When to use varchar or MyISAM for large columns?
When ‘large’ columns are involved, the slower technique is automatically picked. (Significant changes coming in version 8.0; so this bullet item is subject to change.) Related to the previous item, all TEXT datatypes (as opposed to VARCHAR) jump straight to MyISAM.
Which is better varchar or blob for big data?
Varchar is for small data like email addresses, while Text is for much bigger data like news articles, Blob for binary data such as images. The performance of Varchar is more powerful because it runs completely from memory, but this will not be the case if data is too big like varchar(4000) for example.