django - ProgrammingError: column cannot be cast automatically to type double precision -


i'm trying migrate django project using sqlite3 using postgresql. i've created database project, when try run syncdb, following error:

django.db.utils.programmingerror: column "partial_value" cannot cast automatically type double precision hint: specify using expression perform conversion.

the column defined in model:

partial_value = models.floatfield()

i tried searching similar questions, seemed more replacing field types.

you needs update type of column 'partial_value' column. place name of table in following code table_name

alter table table_name alter column partial_value type double precision using (trim(partial_value)::double precision);

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