How to View PL/SQL Table Column Types

1 year ago
William Carter
1 minute

To view table field types in PL/SQL, you can use the following methods:

  1. You can use the DESCRIBE statement in a SQL*Plus session to view the structure and data types of a table. For example:
DESCRIBE table_name;
  1. By using the USER_TAB_COLUMNS data dictionary view, you can query the table’s column information such as column name, data type, length, etc. For example:
SELECT column_name, data_type, data_length 
FROM USER_TAB_COLUMNS 
WHERE table_name = 'table_name';
  1. By using the ALL_TAB_COLUMNS data dictionary view, you can query the table field types of other users. For example:
SELECT column_name, data_type, data_length 
FROM ALL_TAB_COLUMNS 
WHERE table_name = 'table_name' 
AND owner = 'owner_name';

Using the above methods, it is convenient to view the field types of the table and other related information.

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