How to view tables in oracle database

Methods to view tables in Oracle database include: using the SELECT statement to query the table; using the DESCRIBE command to display the table structure; using the DBMS_METADATA package to obtain column information; using tools such as Toad to view the table structure.

How to view tables in Oracle database

There are several methods to view tables in Oracle database:

1. Use SQL query

<code class="sql">SELECT * FROM table_name;</code>

2. Use DESCRIBE command

<code class="sql">DESCRIBE table_name;</code>

3. Use DBMS_METADATA package

<code class="sql">SELECT column_name, data_type, data_length
FROM ALL_TAB_COLUMNS
WHERE table_name = 'table_name';</code>

4. Use third-party tools such as Toad

to open the table and view its structure.

Detailed steps to use SQL query:

1. Open a SQL client (such as SQL*Plus).
2. Connect to Oracle database.

3. Enter the following query:

   <code class="sql">SELECT * FROM table_name;</code>

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4. Replace table_name with the name of the table you want to view.
5. Press Enter.

The result will show all rows and columns in the table.

Detailed steps for using other methods:

• DESCRIBE command: Enter DESCRIBE table_name;# in the SQL client ##, you can view the structure of the table.
• DBMS_METADATA package: Enter SELECT ... FROM ALL_TAB_COLUMNS ... in the SQL client to view the column information of the table.
• Third-party tools such as Toad: Open the table and view its structure options in the tool.

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