Обсуждение: Default value of column in information_schema

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Default value of column in information_schema

От
Юра Величко
Дата:
Hello everyone!

I have a next question:
Is there some rule, that sets default value in the information_schema.COLUMNS.column_default ?

Because for integer is - 777, and for character varying is -  'Hello world'::character varying

I don't find description of this rule. 

I need to know it, to clean up unused symbols from types like character varying, and show it.

Thanks.