How to See the Default Values In A Table In Oracle?

To see the default values in a table in Oracle, you can query the USER_TAB_COLUMNS or ALL_TAB_COLUMNS data dictionary views. These views contain information about the columns in a table, including their default values. You can use a SQL query like the following to see the default values for a specific table:

SELECT COLUMN_NAME, DATA_DEFAULT FROM USER_TAB_COLUMNS WHERE TABLE_NAME = 'your_table_name';

Replace 'your_table_name' with the name of the table you want to check. This query will return the column names and their default values for the specified table.

What is the method for viewing default values in an Oracle table?

To view default values in an Oracle table, you can use the following SQL query:

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SELECT column_name, data_default
FROM all_tab_cols
WHERE table_name = 'your_table_name';

Replace 'your_table_name' with the name of the table you want to view default values for. This query will return a list of column names and their corresponding default values in the specified table.

What is the process for viewing default values in Oracle SQL?

In Oracle SQL, you can view the default values for columns in a table by querying the DBA_TAB_COLS view. Here is the process for viewing default values in Oracle SQL:

1. Connect to your Oracle database using a SQL client or command line interface.
2. Run the following query to view the default values for columns in a specific table:

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SELECT column_name, data_default
FROM dba_tab_cols
WHERE table_name = 'your_table_name';

Replace 'your_table_name' with the name of the table for which you want to view the default values.

1. The query will return a list of columns along with their default values, if they have one.
2. You can also further filter the results to show only columns with default values by adding a condition to the WHERE clause:

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WHERE table_name = 'your_table_name' AND data_default IS NOT NULL;

1. Review the output to see the default values for the columns in the specified table.

Note: You may need appropriate privileges to access the DBA_TAB_COLS view and view the default values for columns in tables. If you do not have access to the DBA_TAB_COLS view, you can use the ALL_TAB_COLS view instead, which will show default values for columns in tables accessible to the current user.

What is the procedure for retrieving default values in Oracle SQL?

In Oracle SQL, default values for columns can be retrieved using the DEFAULT keyword in a SELECT statement.

The following is an example of retrieving default values for columns in a table:

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SELECT column_name, data_default
FROM user_tab_columns
WHERE table_name = 'your_table_name';

This query will return the column names along with their default values for the specified table. Additionally, the default value of a specific column can be retrieved using the DEFAULT constraint in the CREATE TABLE statement, or by querying the USER_TAB_COLUMNS data dictionary view.