我在postgres json列中存储了一些类似于下面json的json.我试图通过查询来识别一些输入错误的数据.我基本上是在寻找房屋描述与房屋编号相同的地址.我不太明白怎么做.
{
"timestamp": "2014-10-23T16:15:28+01:00",
"schools": [
{
"school_id": "1",
"addresses": [
{
"town": "Birmingham",
"house_description": "1",
"street_name": "Parklands",
"addr_id": "4",
"postcode": "B5 8KL",
"house_no": "1",
"address_type": "UK"
},
{
"town": "Plymouth",
"house_description": "Flat a",
"street_name": "Fore Street",
"addr_id": "2",
"postcode": "PL9 8AY",
"house_no": "15",
"address_type": "UK"
}
]
},
{
"school_id": "2",
"addresses": [
{
"town": "Coventry",
"street_name": "Shipley Way",
"addr_id": "19",
"postcode": "CV8 3DL",
"house_no": "662",
"address_type": "UK"
}
]
}
]
}
我编写了以下sql语句,可以找到数据匹配的位置:
select *
FROM title_register_data
where address_data->'schools'->0->'addresses'->0->>'house_description'=
address_data->'schools'->0->'addresses'->0->>'house_no'
这显然只适用于第一所学校的第一个地址.有没有办法查询每所学校的所有地址?