幸运的是,我们可以使用 Postgres 内置的jsonb_to_record函数来构造 JSON 对象。 2、使用 jsonb_to_record 展平 JSON 对象 如果相关列包含 JSON(b) 对象,你可以使用内置函数jsonb_to_record(或json_to_record)将键值对规范化为列。 该函数接受一个 JSON 对象或包含 JSON 对象的列,并返回一条记录。 通过在 ...
创建迁移脚本 vim load.test 2.写入以下参数 load database from sqlite://path to/xxx...
jsonb_to_json(jsonb):将jsonb类型的数据转换为json类型的数据。 分类:转换函数。 优势:方便将jsonb类型的数据转换为json类型的数据,以便进行后续的操作。 应用场景:当需要将jsonb类型的数据转换为json类型的数据时,可以使用该函数。 推荐的腾讯云相关产品:腾讯云数据库 PostgreSQL版。
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This issue is caused by: #12023 We're binding normalised versions of JSONB data to the JDBC driver instead of the user data from JSONB::data. This can lead to wrong data being stored in JSONB[] or other types of nested data structures co...
'reading';OR:SELECTu.*FROMusers u, jsonb_array_elements_text(u.data->'hobbies')ASh(hobby)WHEREh.hobby='reading'ORh.hobby='swimming'; 嵌套:SELECT*FROMusersWHEREdata @>'{"address": {"city": "New York"}}';like:SELECT*FROMusersWHEREdata::textLIKE'%John%';...
yourTableName TabletypeJSONB[]interface{}// Value Marshalfunc(a JSONB)Value()(driver.Value,error){returnjson.Marshal(a)}// Scan Unmarshalfunc(a*JSONB)Scan(valueinterface{})error{b,ok:=value.([]byte)if!ok{returnerrors.New("type assertion to []byte failed")}returnjson.Unmarshal(b,&a)...
This one uses jsonb and arrays to keep track of points. Advent of Code - Day 16 SQL Solutions for Day 16 of Advent of Code. This one calls a plpgsql function recursively. Advent of Code - Day 12 Day 12 of AOC we have a SQL tutorial for the Hill Climbing Algorithm. This exercise ...
constsql=postgres('postgres://username:password@host:port/database',{host:'',// Postgres ip address[s] or domain name[s]port:5432,// Postgres server port[s]database:'',// Name of database to connect tousername:'',// Username of database userpassword:'',// Password of database user...
Use Postgres with JSONB to store Json documents in a database, search and index them - instead of Mongo. Use Postgres as a cron demon to take actions at certain times, like sending mails, with pg_cron adding events to a message queue. Use Postgres for Geospacial queries. Use Postgres ...