How does Mysql query two data tables for the same fields in two tables at the same time

Foreword

Assume there are now two data tables

Table 1 is as follows:

Table 2 is as follows:

When both table 1 and table 2 are in mysql at the same time, only their uuid is the same, and other field information is different. Now you need to use sql statement to query the data that meets the requirements according to the uuid. How to do it?

sql statement to query two tables at the same time

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In fact, this kind of demand is still very common in work, but the method is actually very simple, the sql statement is as follows

select a.*, b.* from data table 1 name a, data table 2 name b WHERE a.uuid=b.uuid and a.webname='ChinesePhotovoltaic Industry Association';# Note: a.webname='China Photovoltaic Industry Association' here means that the webname field in data sheet 1 is the data of 'China Photovoltaic Industry Association'

Explanation as follows:

Generally, when we query the meeting, we select * from the data table. We need to query two tables here. As the name implies, we use a and b instead (such as a.* b.*), and the data table name is also followed by an a or b,Conditional statements are also followed by a or b.

After the above statement is successfully executed, the data that meets the requirements of the two tables is on one data table.

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