[英]How to query where from dictionary column with datatype string in bigquery?
您好我有一列,其中包含具有数据类型字符串的字典。 如何在 bigquery sql 中查询 where attributes.statusSource = source? 这是一个例子
ID | 属性 |
---|---|
1个 | {“flushOut”:0,“expiration”:0,“productAge”:0,“sourceStatus”:“SOURCE”,“criticalStatus”:false,“storageHandling”:“FROZEN”,“expirationReminder”:0} |
2个 | {“flushOut”:0,“expiration”:0,“productAge”:0,“sourceStatus”:“DISCONTINUE”,“criticalStatus”:false,“storageHandling”:“FROZEN”,“expirationReminder”:0} |
我想要返回的是 where attribute.sourceStatus = "source"
ID | 属性 |
---|---|
1个 | {“flushOut”:0,“expiration”:0,“productAge”:0,“sourceStatus”:“SOURCE”,“criticalStatus”:false,“storageHandling”:“FROZEN”,“expirationReminder”:0} |
使用JSON_EXTRACT_SCALAR()
:
SELECT * FROM (
SELECT '{"flushOut": 0, "expiration": 0, "productAge": 0, "sourceStatus": "SOURCE", "criticalStatus": false, "storageHandling": "FROZEN", "expirationReminder": 0}' as attributes
UNION ALL
SELECT '{"flushOut": 0, "expiration": 0, "productAge": 0, "sourceStatus": "DISCONTINUE", "criticalStatus": false, "storageHandling": "FROZEN", "expirationReminder": 0}' as attributes
) WHERE JSON_EXTRACT_SCALAR(attributes, '$.sourceStatus') = 'SOURCE'
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