---
Title: Full Schema Evolution
Description: Schema evolution just works. Adding a column won't bring back "zombie" data. Columns can be renamed and reordered. Best of all, schema changes never require rewriting your table.
LearnMore: /docs/latest/evolution/
Category: Services
Draft: false
weight: 2
excludeFromSearch: true
---
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<div id="termynal" data-termynal data-ty-startDelay="4000" data-ty-typeDelay="20" data-ty-lineDelay="500">
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="sql>">ALTER TABLE taxis</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="">ALTER COLUMN trip_distance</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="" data-ty-delay="2500">TYPE double;</span>
    <span data-ty>Done!</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="sql>">ALTER TABLE taxis</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="">ALTER COLUMN trip_distance</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="">AFTER fare;</span>
    <span data-ty>Done!</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="sql>">ALTER TABLE taxis</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="">RENAME COLUMN trip_distance</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="">TO distance;</span>
    <span data-ty>Done!</span>
</div>