while (jdbc/execute! conn ["ALTER TABLE test_table ALTER COLUMN c TYPE integer USING c::integer + 1”]) works

@jonas Have you seen this: http://dba.stackexchange.com/questions/121453/error-there-is-no-parameter-1-in-execute-using-statement-in-plpgsql

I run into this before, I think DDL and paramters are not supported by postgresql or the prepared statement in which the vector will finally get translated to

@r0man I have not, thanks!

so I have no choice but to inline the value