Alter column operations should allow specification of unchanged fields
andrew-farries opened this issue · comments
Alter column operations should support specifying fields that are unchanged as no-ops.
For example, this migration:
{
"name": "35_alter_column_multiple",
"operations": [
{
"alter_column": {
"table": "events",
"column": "name",
"name": "event_name",
"nullable": false,
"up": "(SELECT CASE WHEN name IS NULL THEN 'placeholder' ELSE name END)",
"down": "name"
}
}
]
}
Renames a field and sets it to NOT NULL
. If the field is already NOT NULL
, the operation should not perform any column duplication or backfilling to support setting the column nullability.