create data_type_families.md

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未来星___费 2021-06-30 15:26:29 +08:00 committed by GitHub
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**示例** **示例**
``` sql ``` sql
SELECT * FROM system.data_type_families WHERE alias_to = 'String' SELECT * FROM system.data_type_families WHERE alias_to = 'String';
``` ```
``` text ``` text