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This article mainly explains "the usage of special query sentences in MySQL". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn the usage of special query sentences in MySQL.

1. Calculate the total number of record sql statements in the data table

> select count (*) from openes

+-+

| | count (*) |

+-+

| | 136 |

+-+

1 row in set (0.00 sec)

two。 Query the SQL statement with field type datetime:

Mysql > select * from biders where author_id = 2253 and created_at between '2012-3-19 00:00:00' and '2012-3-19 23:59:59

'

+-- +

| | id | author_id | created_at | updated_at | num_of_target_files | |

+-- +

| | 10 | 2353 | 2012-3-19 15:21:08 | 2012-3-19 15:21:08 | NULL |

+-- +

1 row in set (0.00 sec)

At this point, I believe you have a deeper understanding of "the use of special query statements in MySQL". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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