---
Title: Expressive SQL
Description: Iceberg supports flexible SQL commands to merge new data, update existing rows, and perform targeted deletes. Iceberg can eagerly rewrite data files for read performance, or it can use delete deltas for faster updates.
LearnMore: /docs/latest/spark-writes/
Category: Services
Draft: false
weight: 1
excludeFromSearch: true
---
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 <div id="termynal-expressive-sql" data-termynal data-ty-startDelay="2000" data-ty-typeDelay="20" data-ty-lineDelay="500">
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="sql>">MERGE INTO prod.nyc.taxis pt</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="">USING (SELECT * FROM staging.nyc.taxis) st</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="">ON pt.id = st.id</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="">WHEN NOT MATCHED THEN INSERT *;</span>
    <span data-ty>Done!</span>
    <span data-ty="input" data-ty-cursor="▋" data-ty-prompt="sql>"></span>
</div>