在你的DAO(数据访问对象)接口中,使用Spring Data JPA提供的@Query注解编写自定义查询语句。在查询语句中,使用Postgres的JSONB函数来解析JSONB列,并将其映射到DTO类。例如: 代码语言:txt 复制 @Query(value = "SELECT jsonb_array_elements(data) AS item FROM your_table", nativeQuery = true)...
SELECT a->>'key' AS key, a->>'value' AS value FROM jsonb_path_query('{"code1": { "obj1": [ { "sample_name": "1", "sample_code": "1", "sample_serial": "01", "parameters": [ { "param1": "param1", "param2": "param2", "param3": "param3", "param4": "param...
5 How to sum (aggregate) all the values in a key/value JSONB? 3 Build a single JSON value from two jsonb columns in two different tables 0 PostgreSQL row as jsonb "array", not "object" 2 Postgres: Filtering large jsonb arrays coming from a sub-query 1 Postgres JS...
第一种:查询给定的值索引不变 /** * 在数组中模糊搜索给定的值 * @param $data * @param $keyword * @return array */ function...== false ){ $arr[$key] = $values; } } return $arr; } 第二种:查询给定的重新生成索引 /**...* 在数组中模糊搜索给定的值 * @param $data * @param $...
QuestionIDs postgres.Jsonb `json:"question_ids"` } varhomeworkRes []homeWorkQuestionIds db.Model(&lesson.LessonHomeWork{}). Select("question_ids"). Joins("LEFT JOIN xxxx on lesson_home_works.home_work_id = home_works.id"). Where("ccc.lesson_id = ?", lessonIDQuery). ...
postgres 读书笔记 第1章 预写日志 预写日志在客户端写入数据的时候首先写入预写日志中,从原理上来说因为是顺序写性能会更好。 预写日志的配置。 在编译安装的时候可以指定--with-wal-segsize=size修改默认的预写日志文件大小。 wal_level=replica fsync=
private JsonbContent jsonbContent; public Long getId() { return id; } public void setId(Long id) { this.id = id; } public JsonbContent getJsonbContent() { return jsonbContent; } public void setJsonbContent(JsonbContent jsonbContent) { ...
Featuring regep_split_to_array and recursive functions. These functions even have terminal animations! Advent of Code - Day 17 SQL Solutions for Day 17 of Advent of Code. This one uses jsonb and arrays to keep track of points. Advent of Code - Day 16 SQL Solutions for Day 16 of ...
json string jsonb string line string lseg string macaddr string macaddr8 string money number numeric, decimal number Infinity, -Infinity, and NaN are not supported and converted to null. Issue: #8902. path string pg_lsn string point string polygon string real, float4 number ...
CREATETABLEjs( idserial, data jsonb,CHECK(data @@'name IS STRING ANDsimilar_ids.#: IS NUMERIC ANDpoints.#:(x IS NUMERIC AND y IS NUMERIC)'::jsquery)); In this example the check constraint validates that in the "data" jsonb column the value of the "name" key is a string, the ...