Hi !

I cannot figure out how I can add an unique column using H2.
According to documentation, this should work:
alter table testit add myuniquecol varchar(50) unique;
But I keep on getting error:
[Error Code: 42000, SQL State: 42000]  Syntax error in SQL statement "ALTER 
TABLE TESTIT ADD MYUNIQUECOL VARCHAR(50) UNIQUE[*] "; SQL statement:
alter table testit add myuniquecol varchar(50) unique [42000-166]

Creating a table with similar syntax is working fine:
create table testit (id bigint primary key, uni varchar(50) unique);

Can anyone help me on the correct syntax to use (or is this a bug ?) ?

Thanks !

PS. I don't want to use separate add constraint, because my sql is 
generated by liquibase

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