Catalog Columns Notice For Free

The INFORMATION_SCHEMA. COLUMNS view allows you to get information about all columns for all tables and views within a database. By default it will show you this information for every single table and view that is in the database.

Columns view. Here's an example of using that view to return column data type information: SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH AS MAX_LENGTH, CHARACTER_OCTET_LENGTH AS OCTET_LENGTH FROM INFORMATION_SCHEMA. COLUMNS WHERE TABLE_NAME = 'Products' AND COLUMN_NAME = 'ProductName';

The DESCRIBE or DESC command in MySQL is a useful way to retrieve information about a table's structure, including column names, data types, and constraints. To use the DESCRIBE command, you need to log in to the MySQL server, select the database, and execute the command with the name of the table you want to describe.

If we want to show the columns information of a table from another database or not available in the current database, we can use the following query: mysql> SHOW COLUMNS FROM database_name. table_name; OR. mysql> SHOW COLUMNS FROM table_name IN database_name;

The more flexible way to get a list of columns in a table is to use the MySQL SHOW COLUMNS command. As you can see the result of this SHOW COLUMNS command is the same as the result of the DESC statement. For example, the following statement lists all columns of the payments table in the classicmodels database.

The following is a syntax to display the column information in a specified table: SHOW [EXTENDED] [FULL] {COLUMNS | FIELDS} {FROM | IN} table_name.

To get the column names of a table in MySQL, you can use the SHOW COLUMNS FROM command. SHOW COLUMNS FROM my_table; This will return a result set containing the column names of the my_table table.