Record1: [{
"business_id": 2,
"forms": {
"f522": {
"id": "f522",
"is_deleted": 0,
"title": "Form 1"
},
"f8b6": {
"id": "f8b6",
"is_deleted": 0,
"title": "Form 2"
},
"fw56": {
"id": "fw56",
"is_deleted": 0,
"title": "Form 3"
}
}
}]
Record2: [{
"business_id": 3,
"forms": {
"f788": {
"id": "f788",
"is_deleted": 0,
"title": "Form 11"
},
"f6yy": {
"id": "f6yy",
"is_deleted": 0,
"title": "Form 12"
},
"f00i": {
"id": "f00i",
"is_deleted": 0,
"title": "Form 13"
}
}
}]
Record3: [{
"business_id": 4,
"forms": {
"f839": {
"id": "f839",
"is_deleted": 0,
"title": "Form 21"
},
"f1bc": {
"id": "f1bc",
"is_deleted": 0,
"title": "Form 22"
},
"f6ac": {
"id": "f6ac",
"is_deleted": 0,
"title": "Form 23"
}
}
}]
我有3条记录存储在dynamoDB表中。哈希键是business_id。 forms对象是具有子对象(id,is_deleted,title)的父对象。我不知道business_id值。但我只有id值" f6yy"。我想更新is_deleted为1的id(值为f6yy)。请建议整个查询。
答案 0 :(得分:1)
没有此类查询,因为如果没有为表中的条目提供密钥(business_id),AWS无法识别您要修改的条目。
因此,您需要根据查询更改架构并进行设计,或者将表分解为多个表,以便数据库类似
table 1- business_id form_id(ex. f6yy etc)
table 2- form_id form_object(ex. {"is_deleted": 0,"title": "Form 1"})
现在可以在表2上为f6yy进行更新。
答案 1 :(得分:0)
要从DynamoDB表中删除项目,需要分区和排序键。
对于主键,您必须提供所有属性。对于 例如,使用简单的主键,您只需提供一个值 对于分区键。对于复合主键,您必须提供 分区键和排序键的值。