python - Complete table get updated instead of single row in django -

i have table named tablecolumn. , getting columnlistobj below django model api query. updated object , save it.

columnlistobj = tablecolumn.objects.get(columnone=one,columntwo=two) columnlistobj.column3 = 'some text' columnlistobj.save() 

accepted behavior :

the 1 row being selected (columnone=one , columntwo=two) should updated.

actual behavior :

complete table (columntwo='two') update.

note: 1. columnone , columntwo combined primary key. means no duplicate. 2. tried debug , print columnlistobje after get. prints same desired row.

schema tablecolumn (please dont confuse above dummy names)

class tablecolumn(models.model):     table = models.foreignkey('tablelist',primary_key=true)     table_column_id = models.integerfield(primary_key=true)     current_column_name = models.charfield(max_length=255)     column_description = models.charfield(max_length=1024, db_column='column_description',blank=true)  class meta:     db_table = 'table_column'