PostgreSQL 用斜杠打开 JSONB 列

Question

如何打开带有斜杠的 JSONB 字符串的 JSONB 列？

"{\"id\":\"c39fe0f5f9b7c89b005bf3491f2a2ce1\",\"token\":\"c39fe0f5f9b7c89b005bf3491f2a2ce1\",\"line_items\":[{\"id\":32968150843480,\"properties\":{},\"quantity\":2,\"variant_id\":32968150843480,\"key\":\"32968150843480:4a6f6b7d19c7aef119af2cd909f429f1\",\"discounted_price\":\"40.00\",\"discounts\":[],\"gift_card\":false,\"grams\":0,\"line_price\":\"80.00\",\"original_line_price\":\"80.00\",\"original_price\":\"40.00\",\"price\":\"40.00\",\"product_id\":4638774493272,\"sku\":\"36457537-mud-yellow-28\",\"taxable\":false,\"title\":\"Knee Length Summer Shorts - Camel / 28\",\"total_discount\":\"0.00\",\"vendor\":\"Other\",\"discounted_price_set\":{\"shop_money\":{\"amount\":\"40.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"40.0\",\"currency_code\":\"USD\"}},\"line_price_set\":{\"shop_money\":{\"amount\":\"80.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"80.0\",\"currency_code\":\"USD\"}},\"original_line_price_set\":{\"shop_money\":{\"amount\":\"80.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"80.0\",\"currency_code\":\"USD\"}},\"price_set\":{\"shop_money\":{\"amount\":\"40.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"40.0\",\"currency_code\":\"USD\"}},\"total_discount_set\":{\"shop_money\":{\"amount\":\"0.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"0.0\",\"currency_code\":\"USD\"}}}],\"note\":null,\"updated_at\":\"2022-03-15T13:24:02.787Z\",\"created_at\":\"2022-03-15T13:23:31.912Z\",\"controller\":\"custom_webhooks\",\"action\":\"store_data\",\"custom_webhook\":{\"id\":\"c39fe0f5f9b7c89b005bf3491f2a2ce1\",\"token\":\"c39fe0f5f9b7c89b005bf3491f2a2ce1\",\"line_items\":[{\"id\":32968150843480,\"properties\":{},\"quantity\":2,\"variant_id\":32968150843480,\"key\":\"32968150843480:4a6f6b7d19c7aef119af2cd909f429f1\",\"discounted_price\":\"40.00\",\"discounts\":[],\"gift_card\":false,\"grams\":0,\"line_price\":\"80.00\",\"original_line_price\":\"80.00\",\"original_price\":\"40.00\",\"price\":\"40.00\",\"product_id\":4638774493272,\"sku\":\"36457537-mud-yellow-28\",\"taxable\":false,\"title\":\"Knee Length Summer Shorts - Camel / 28\",\"total_discount\":\"0.00\",\"vendor\":\"Other\",\"discounted_price_set\":{\"shop_money\":{\"amount\":\"40.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"40.0\",\"currency_code\":\"USD\"}},\"line_price_set\":{\"shop_money\":{\"amount\":\"80.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"80.0\",\"currency_code\":\"USD\"}},\"original_line_price_set\":{\"shop_money\":{\"amount\":\"80.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"80.0\",\"currency_code\":\"USD\"}},\"price_set\":{\"shop_money\":{\"amount\":\"40.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"40.0\",\"currency_code\":\"USD\"}},\"total_discount_set\":{\"shop_money\":{\"amount\":\"0.0\",\"currency_code\":\"USD\"},\"presentment_money\":{\"amount\":\"0.0\",\"currency_code\":\"USD\"}}}],\"note\":null,\"updated_at\":\"2022-03-15T13:24:02.787Z\",\"created_at\":\"2022-03-15T13:23:31.912Z\"}}"

这个真正的 JSONB 列

我找不到任何关于如何处理这种类型的 JSONB 的示例

Answer 1

无论插入你的数据是什么，都会把它搞砸。它获取 JSON 对象的字符串表示形式并将其填充到 JSON 字符串标量中。你需要解决这个问题，否则它就会继续发生。

要修复已有的内容，您需要从 JSON 字符串中提取真正的 PostgreSQL 字符串，然后将其转换为 JSONB。使用 #>>'{}' 可以不直观地提取 JSON 字符串，或者使用 ->>0 甚至不太直观。

select (data#>>'{}')::jsonb from table_name.

当然，您应该永久修复它，而不是一直即时修复，这样既缓慢又令人困惑。

update table_name set data=(data#>>'{}')::jsonb;

当然，修复首先搞砸的工具和修复历史数据需要以协调的方式完成，否则你的手上会出现一团糟。

Answer 2

我认为您 jsonb 字段中的字符串格式错误。您可以尝试通过以下方式修复它：

select trim(both '"' from replace(data::varchar, '\"', '"'))::jsonb data from tbl;

PostgreSQL JSONB online