What is the method for performing complex queries in My…

Generally, the method for conducting compound queries in MySQL databases involves using the WHERE clause along with the AND, OR, and NOT keywords to combine multiple search conditions.

For example, you can use the keyword “AND” to specify multiple conditions that must all be met in order to return a result. For example:

SELECT * FROM table_name WHERE condition1 AND condition2;

You can also use the OR keyword to specify multiple conditions, where only one of them needs to be satisfied to return a result. For example:

SELECT * FROM table_name WHERE condition1 OR condition2;

In addition, the NOT keyword can be used to negate the search criteria. For example:

SELECT * FROM table_name WHERE NOT condition;

In addition to using the AND, OR, and NOT keywords, you can also use parentheses to specify the priority of query conditions. For example:

SELECT * FROM table_name WHERE (condition1 AND condition2) OR condition3;

The methods mentioned above are common for performing compound queries, but in reality, one can flexibly use these keywords and syntax structures based on specific business needs for conducting compound queries.