Class AlteredColumnBuilder

Allows us to force consumers to do exactly one alteration to a column.

One cannot do no alterations:

await db.schema
  .alterTable('person')
//  .execute() // Property 'execute' does not exist on type 'AlteredColumnBuilder'.
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await db.schema
  .alterTable('person')
//  .alterColumn('age', (ac) => ac) // Type 'AlterColumnBuilder' is not assignable to type 'AlteredColumnBuilder'.
//  .execute()
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One cannot do multiple alterations:

await db.schema
  .alterTable('person')
//  .alterColumn('age', (ac) => ac.dropNotNull().setNotNull()) // Property 'setNotNull' does not exist on type 'AlteredColumnBuilder'.
//  .execute()
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Which would now throw a compilation error, instead of a runtime error.