Apache Flink SQL目前还不支持直接解析JSON字符串并将其转换为预期的数据类型。你可以在Flink SQL中使用STRING_TO_ARRAY函数将字符串转换为数组。以下是一个示例，展示了如何将字符串转换为数组： SELECT STRING_TO_ARRAY(JSON_QUERY('{"a":[{"c":"...

问答 2023-12-06 来自：开发者社区

Flink sql有没有函数支持解析一个json string并转成期望的数据类型呢？

Flink sql有没有函数支持解析一个json string并转成期望的数据类型呢？JSON_QUERY('{"a":[{"c":"c1"},{"c":"c2"}]}', 'lax $.a[*].c')这个内置函数返回的是string: '["c1","c2"]'，而我期望返回的是ARRAY: ["c1","c2"]

问答 2023-12-03 来自：开发者社区

flink sql有没有函数支持解析一个json string并转成期望的数据类型呢？

flink sql有没有函数支持解析一个json string并转成期望的数据类型呢？JSON_QUERY('{"a":[{"c":"c1"},{"c":"c2"}]}', 'lax $.a[].c')这个内置函数返回的是string: '["c1","c2"]'，而我期望返回的是ARRAY: ["c1","c2"]所以期望的sql长这样select parse_json( JSON_QU...

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