sql - Get number of constraints associated with a column -

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i have been trying number of constraints associated column using sql command.

i know if there exists 

column.number_of_constraints

how can information?

i'm working oracle database.

the answer in regard oracle database. thanks

all_cons_columns describes columns accessible current user , specified in constraints. https://docs.oracle.com/cd/b28359_01/server.111/b28320/statviews_1042.htm

you need query data dictionary see table columns , corresponding constraints. can try below query:

select *   user_cons_columns  table_name = '<your table name>';

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