# 查询DWS数据
[单表查询](https://support.huaweicloud.com/devg-911-dws/dws_04_1007.html)
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[多表连接查询](https://support.huaweicloud.com/devg-911-dws/dws_04_1003.html)
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[子查询表达式](https://support.huaweicloud.com/devg-911-dws/dws_04_1122.html)
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[WITH表达式](https://support.huaweicloud.com/devg-911-dws/dws_04_1002.html)
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[UNION操作符的使用](https://support.huaweicloud.com/devg-911-dws/dws_04_1121.html)
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[跨逻辑集群数据读写](https://support.huaweicloud.com/devg-911-dws/dws_04_1239.html)
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[SQL on Hudi](https://support.huaweicloud.com/devg-911-dws/dws_04_1069.html)
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