How to Reset Default Value on A Column on Oracle Table?

To reset the default value on a column in an Oracle table, you can use the ALTER TABLE statement along with the MODIFY keyword.

Here is an example of how you can reset the default value on a column named column_name in a table named table_name to NULL:

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ALTER TABLE table_name MODIFY (column_name DEFAULT NULL);

You can also set a specific default value for the column by replacing NULL with the desired default value in the above statement.

Keep in mind that resetting the default value on a column in an Oracle table will only affect future rows inserted into the table, and will not change the existing data in the column.

How to reset default value on a column with a foreign key constraint in an oracle table?

To reset the default value on a column with a foreign key constraint in an Oracle table, you can use the following steps:

1. Disable the foreign key constraint:

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ALTER TABLE table_name
DISABLE CONSTRAINT constraint_name;

1. Update the default value on the column:

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ALTER TABLE table_name
MODIFY column_name DEFAULT new_default_value;

1. Enable the foreign key constraint:

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ALTER TABLE table_name
ENABLE CONSTRAINT constraint_name;

Make sure to replace table_name, constraint_name, column_name, and new_default_value with the appropriate values for your specific scenario.

How to set a new default value for a column on an oracle table?

To set a new default value for a column on an Oracle table, you can use the ALTER TABLE statement with the MODIFY option. Here's an example:

ALTER TABLE table_name MODIFY column_name DEFAULT new_default_value;

Replace "table_name" with the name of your table, "column_name" with the name of the column you want to modify, and "new_default_value" with the new default value you want to set for the column.

Keep in mind that the new default value must be compatible with the data type of the column. Also, be cautious when setting default values for columns that already contain data, as the default value will only be applied to new records.

After running the ALTER TABLE statement, the new default value will be set for the specified column on the Oracle table.

How to reset default value on a numeric column in an oracle table?

To reset the default value on a numeric column in an Oracle table, you can use the following steps:

1. Connect to your Oracle database using a tool like SQL Developer or SQL*Plus.
2. Locate the table that contains the numeric column you want to reset the default value for.
3. Use the ALTER TABLE statement to modify the default value of the column. Here is an example query: ALTER TABLE table_name MODIFY column_name DEFAULT new_default_value;
4. Replace table_name with the name of your table and column_name with the name of the numeric column you want to reset the default value for. Replace new_default_value with the new default value you want to set for the column.
5. Execute the ALTER TABLE statement to reset the default value for the numeric column in your Oracle table.

After completing these steps, the default value for the numeric column in your Oracle table should be reset to the new value you specified.

How to reset default value on a column in an oracle table with audit enabled?

If you want to reset the default value on a column in an Oracle table with audit enabled, you can follow these steps:

1. Disable the audit on the table before making any changes to the column. This can be done using the following command:

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AUDIT ALTER, UPDATE, DELETE, INSERT ON <table_name> BY SESSION;

1. Alter the table and set the default value for the column to the new desired value:

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ALTER TABLE <table_name> MODIFY <column_name> DEFAULT <new_default_value>;

1. If you also need to reset the existing values in the column to the new default value, you can run an UPDATE statement to update all rows in the table:

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UPDATE <table_name> SET <column_name> = <new_default_value>;

1. Once you have made the necessary changes, you can re-enable the audit on the table:

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AUDIT ALTER, UPDATE, DELETE, INSERT ON <table_name> BY SESSION;

By following these steps, you can reset the default value on a column in an Oracle table with audit enabled.