Secure Columns Record For Free

Go to Settings > Security. Click Field Security Profiles. Click New, enter a name, such as Sales Manager access contact mobile phone, and click Save. Click Users, click Add, select the users that you want to grant read access to the mobile phone number on the contact form, and then click Add.

In addition, column-level security also eliminates the need for introducing views to filter out columns for imposing access restrictions on the users. You can implement column-level security with the GRANT Object Permissions T-SQL syntax.

Syntax: SELECT column1, column2, ... FROM table_name [WHERE conditions] [ORDER BY expression [ ASC | DESC ]] LIMIT count; In the above syntax, WHERE conditions are optional conditions that must be true for the records to be selected.

If you execute a DENY statement at table level to a column for a user, and after that you execute a GRANT statement on the same column, the DENY permission is removed and the user can have access to that column. Similarly, if you execute GRANT and then DENY, the DENY permission will be in force.

The CHECK constraint is used to limit the value range that can be placed in a column. If you define a CHECK constraint on a column it will allow only certain values for this column. If you define a CHECK constraint on a table it can limit the values in certain columns based on values in other columns in the row.

Use the SQL LIMIT clause with ORDER BY statement LIMIT 5; I have executed the above query and got the below output. Here, you can see the output is ordered by the employee's last name column and has returned only 5 records which are specified with SQL LIMIT statement.

Grant SELECT/INSERT/UPDATE/DELETE (as needed) on the view to APP . Create an INSTEAD OF trigger on the view to translate inserts, updates and deletes to the underlying table. The PL/SQL in the trigger can ignore that column for updates, or raise an exception if you want it to detect an attempt to modify the column.