错误：无法从表列的标量中提取元素

Question

我有一个带product_data列（JSONB类型）的产品表，数据采用以下格式。

 [{
    "Price": 34599,
    "Units": 1,
    "productId": 3,
    "componentId": 0,
    "isDuplicate": false,
    "productCode": "PRD-3",
    "productName": "OnePlus 6T",
    "UnitDiscount": 0,
    "discountType": "1",
    "componentCode": "",
    "componentList": [{
        "componentId": 5,
        "componentCode": "ACC-1",
        "componentName": "Charger",
        "componentActive": true,
        "componentTaxCode": null,
        "componentCategory": "General",
        "componentUnitPrice": 0,
        "componentCategoryId": 1,
        "componentReorderValue": 20
    }, {
        "componentId": 6,
        "componentCode": "ACC-2",
        "componentName": "Earphone",
        "componentActive": true,
        "componentTaxCode": null,
        "componentCategory": "General",
        "componentUnitPrice": 0,
        "componentCategoryId": 1,
        "componentReorderValue": 20
    }],
    "productUnitPrice": 34599,
    "UnitPriceDiscount": 34599,
    "componentCategory": "",
    "componentUnitPrice": ""
}, {
    "Price": 1200,
    "Units": 1,
    "productId": 3,
    "componentId": 5,
    "isDuplicate": false,
    "productCode": "PRD-3",
    "productName": "OnePlus 6T",
    "UnitDiscount": 0,
    "discountType": "1",
    "componentCode": "ACC-1",
    "componentList": [{
        "componentId": 5,
        "componentCode": "ACC-1",
        "componentName": "Charger",
        "componentActive": true,
        "componentTaxCode": null,
        "componentCategory": "General",
        "componentUnitPrice": 0,
        "componentCategoryId": 1,
        "componentReorderValue": 20
    }, {
        "componentId": 6,
        "componentCode": "ACC-2",
        "componentName": "Earphone",
        "componentActive": true,
        "componentTaxCode": null,
        "componentCategory": "General",
        "componentUnitPrice": 0,
        "componentCategoryId": 1,
        "componentReorderValue": 20
    }],
    "componentName": "Charger",
    "productUnitPrice": "",
    "UnitPriceDiscount": 1200,
    "componentCategory": "General",
    "componentUnitPrice": "1200"
}, {
    "Price": 800,
    "Units": 1,
    "productId": 3,
    "componentId": 6,
    "isDuplicate": false,
    "productCode": "PRD-3",
    "productName": "OnePlus 6T",
    "UnitDiscount": 0,
    "discountType": "1",
    "componentCode": "ACC-2",
    "componentList": [{
        "componentId": 5,
        "componentCode": "ACC-1",
        "componentName": "Charger",
        "componentActive": true,
        "componentTaxCode": null,
        "componentCategory": "General",
        "componentUnitPrice": 0,
        "componentCategoryId": 1,
        "componentReorderValue": 20
    }, {
        "componentId": 6,
        "componentCode": "ACC-2",
        "componentName": "Earphone",
        "componentActive": true,
        "componentTaxCode": null,
        "componentCategory": "General",
        "componentUnitPrice": 0,
        "componentCategoryId": 1,
        "componentReorderValue": 20
    }],
    "componentName": "Earphone",
    "productUnitPrice": "",
    "UnitPriceDiscount": 800,
    "componentCategory": "General",
    "componentUnitPrice": "800"
}]

当从下面的查询中获取数据时，当在查询中复制此数据时，当JSONB数据为数组形式时，它显示无法获取标量元素，请提供帮助。

  SELECT product_data from (
SELECT jsonb_array_elements(PRODUCT_DATA) as  product_data  FROM PRODUCTS 
    ) X 

同时将此jsonb数据而不是列复制到查询中，然后工作正常。