Migration DSL

Use t.amount to declare amount-backed columns.

Multi-symbol amount

t.amount :amount

Creates:

• amount_atomic as numeric(78, 0)
• amount_symbol as string(10)

Fixed symbol amount

t.amount :fee, symbol: :SOL

Creates:

• fee_atomic as numeric(78, 0)

Precision override

t.amount :reserve, precision: 40

Use this only when you intentionally want tighter bounds.