Primary Key columns are updated to nullable after initial apply

[chasegiles-built]

Provider Version

0.40

Terraform Version

0.15.5

Describe the bug

Columns that are a part of the primary key are correctly created with NOT NULL. On the next apply, if you do no explicitly define nullable in the column definition, Terraform will update these columns to NULL.

Expected behavior

Although the default of a column nullable is true, I would expect Terraform to account for columns defined in the primary key and consider those to be false by default.

Code samples and commands

Running terraform plan displays the change.

Mocked up structure that represents our scenario:

resource "snowflake_table" "table" {

  database = "DATABASE"
  schema   = "SCHEMA"
  name     = "TABLE"

  # column that is part of the primary key
  column {
    name = "key"
    type = "NUMBER"
  }

  # additional column
  column {
    name = "c1"
    type = "NUMBER"
  }

}

Terraform will create the table on the first apply and the key column will have NOT NULL.

The next apply will result in:

~ nullable = false -> true