How to optimize the data type of a table using MySQL database commands

What data type needs to be used in the MySQL database table is determined according to the application; in the MySQL database, you can use the procedure analyze function to achieve this. The following uses a specific example to illustrate the usage of this function. The operation is as follows:

##1. The first step is to create the database table t_tree and view the table structure. The command is as follows:

create table t_tree(
id int(4),
tid int(4),
tname varchar(20),
tdesc varchar(100);
);
desc t_tree;

As shown in the figure below:

2. In the second step, use the procedure analyze function to analyze t_tree,

select * from t_tree procedure analyse()；

as shown in the figure below:

3. The third step is to insert five pieces of data into the database table t_tree, as shown in the figure below:

##4. The fourth step is to view the database table t_tree data

select * from t_tree

As shown in the figure below:

5. In the fifth step, use the procedure analyze function again to analyze the table t_tree,

select * from t_tree procedure analyse();

as shown below Shown:

6. In the sixth step, you can add parameters in the procedure analyze function,

select * from t_tree procedure analyse(16,256);

As shown in the figure below:

Notes

Pay attention to the usage of the procedure analyze function

Master the MySQL database analysis table data type method

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