Hi.

I've created a table with unique constraint on one column with liquibase. I 
forgot to name that constraint, so a random name was choosen by 2=h2 (or 
liquibase, doesn't matter). Now I need to drop that constraint, but I have 
no success.

I should obtain a constraint name by quering:
select constraint_name  from information_schema.constraints where 
table_schema = 'PUBLIC' and TABLE_NAME='foo' and  COLUMN_LIST 
='column_name';


.. but I can't use that result this way:
alter table foo drop constraint (select constraint_name ...)

Any tip how to use result of that select as argument for alter table 
request?

Thx
Dusan

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