What are key differences and what is a use case for both of them? Thanks!
什么是关键差异以及它们的用例是什么？谢谢！
1 个解决方案
#1
20
Full-text search is the kind of search based on special sort of index (full-text, obviously). So you get the power of O(lgN) while searching using it.
全文搜索是一种基于特殊索引的搜索（显然是全文）。因此，在使用它时，您可以获得O（lgN）的强大功能。
While like %% always causes table fullscan which can be terrible slow (when you have 100k and more rows).
虽然像%%总是导致表fullscan可能很慢（当你有100k和更多行）。
Personally I use Like %% when it is a small table (0-1000 rows) and I'm sure that it will never grow (and, important, when like %% fits the task requirements).
我个人使用Like %%，当它是一个小表（0-1000行）时，我确信它永远不会增长（而且，重要的是，当%%符合任务要求时）。
Note: fulltext indexes are available only for myisam SE. If you use innodb - then you need to look at some 3rd party indexing software like sphinx
注意：全文索引仅适用于myisam SE。如果您使用innodb - 那么您需要查看一些第三方索引软件，如sphinx
#1
20
Full-text search is the kind of search based on special sort of index (full-text, obviously). So you get the power of O(lgN) while searching using it.
全文搜索是一种基于特殊索引的搜索（显然是全文）。因此，在使用它时，您可以获得O（lgN）的强大功能。
While like %% always causes table fullscan which can be terrible slow (when you have 100k and more rows).
虽然像%%总是导致表fullscan可能很慢（当你有100k和更多行）。
Personally I use Like %% when it is a small table (0-1000 rows) and I'm sure that it will never grow (and, important, when like %% fits the task requirements).
我个人使用Like %%，当它是一个小表（0-1000行）时，我确信它永远不会增长（而且，重要的是，当%%符合任务要求时）。
Note: fulltext indexes are available only for myisam SE. If you use innodb - then you need to look at some 3rd party indexing software like sphinx
注意：全文索引仅适用于myisam SE。如果您使用innodb - 那么您需要查看一些第三方索引软件，如sphinx