Can't create table 'table_name' (errno: 139) - How to solve MySQL error: Unable to create table, error number: 139

Can't create table 'table_name' (errno: 139) - How to solve MySQL error: Unable to create table, error number: 139, specific code examples are required

When developing databases, we often encounter the need to create tables. However, sometimes you may encounter errors while creating tables in MySQL, one of which is error number 139. This article explains how to solve this problem and provides specific code examples.

First, let’s understand what this error means. When MySQL fails to create a table, it returns an error number, where 139 means "A field in the table definition has an invalid length or precision." In other words, the length or number of digits after the decimal point of a field in the table you created does not meet the requirements.

So how to solve this problem? Here are some solutions:

1. Check the field type and length in the table definition
   First, you need to check the field type and length you specified when creating the table. For example, if you create a table named "table_name" and specify a string type field with a length of 10 when defining the field, you need to confirm that your field length is correct. Make sure your field length does not exceed the limit for the corresponding field type.

   The following is a sample code:

   CREATE TABLE `table_name` (
     `id` INT(11) NOT NULL AUTO_INCREMENT,
     `name` VARCHAR(10),
     PRIMARY KEY (`id`)
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

2. Check field precision
   Another possible cause of error 139 is that the precision of the field is incorrect. If you define a DECIMAL type field when you create the table and specify the number of digits after the decimal point (for example, DECIMAL(10, 2)), make sure that the actual value of your field does not have more digits after the decimal point than you defined in the table. the number of digits specified in .

   The following is a sample code:

   CREATE TABLE `table_name` (
     `id` INT(11) NOT NULL AUTO_INCREMENT,
     `price` DECIMAL(10, 2),
     PRIMARY KEY (`id`)
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

3. Check MySQL version
   In addition, you also need to ensure that the MySQL version you are using supports the field type you used when creating the table and length. Some field types and lengths may have different restrictions in different MySQL versions. If you find that your table definition can be created successfully in one MySQL version, but error 139 is reported in another version, it may be because the MySQL version you are using does not support the field type or length.

Finally, if you encounter a problem that cannot be solved, you can consult the MySQL official documentation or seek help from the MySQL community. It's possible that they have a more in-depth explanation and solution to this problem.

To summarize, when you encounter error number 139 when creating a table in MySQL, you need to carefully check the field type, length, and precision in the table definition to ensure that they comply with the specifications. If the problem persists, you may consider checking whether the MySQL version you are using supports the field type and length you defined. I hope this article can help you solve MySQL error 139 and provides relevant code examples.

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