(2 rows)(2 rows) 为防格式错误,你将获得一些类似一下的东西: postgres=# INSERT INTO rpg_items (data) VALUES ('{"name":"dummy","buy":"200","ppo"}'); ERROR: invalid input syntax for type json LINE 1: INSERT INTO rpg_items (data) VALUES ('{"name":"dummy","buy":...LINE 1: ...
方式1: 指定数组数据类型 @DatapublicstaticclassSelfData{publicString[] series;publicJsonNodereport_rows; }publicvoid insertArrayTopostgres() {StringdataStr="{\"series\":[\"2024/06/18 00:00:00\"],\"rows\":[{\"sum\":[34517],\"values\":[[204],[132]],\"byValue\":[\"i am robot\...
%%sql-- PL/pgSQL code to create pivot tables with automatic column names-- prerequisite: install the tablefunc modulecreateextensionifnotexiststablefunc;-- tablename: name of source table you want to pivot-- rowc: the name of the column in source table you want to be the rows-- colc: ...
typedef union { struct /* Normal varlena (4-byte length) */ { uint32 va_header; char va_data[FLEXIBLE_ARRAY_MEMBER]; } va_4byte; struct /* Compressed-in-line format */ { uint32 va_header; /*头部存放了压缩后的长度*/ uint32 va_tcinfo; /* Original data size (excludes header) an...
(res.rows); client.end(); }); // 使用to_json函数将查询结果转换为JSON格式 client.query("SELECT to_json(your_table) AS json_data FROM your_table", (err, res) => { if (err) throw err; console.log(res.rows); client.end(); }); // 使用array_agg函数将多行结果聚合为一个数组 ...
PostgreSQL是一种开源的关系型数据库管理系统,也被称为Postgres。它支持广泛的数据类型,包括数组类型。在PostgreSQL中,可以使用数组agg函数对每一行的数组进行聚合操作。 数组agg函数是一个聚合函数,它将每一行的数组作为输入,并返回一个包含所有输入数组的聚合数组。它可以用于将多个数组合并为一个数组,并且可以在聚合过...
{"mary":2,"jimmy":43,"paulie":"asfasfasfd"} {"mary":3,"jimmy":435,"paulie":"ererere"} {"mary":6,"jimmy":43343,"paulie":"eresdfssfsfasfae"} {"mary":35,"jimmy":5,"paulie":"wrew\sdfsd"} {"mary":3,"jimmy":44545,"paulie":"\sdfs\\\sfs\\gf"} (5 rows) [pol@polhost ...
ID int64 `json:"id"` Name string `json:"name"` StartTime string `json:"startTime"` EventUsers EventUserList `json:"eventUsers"` } // ... var events []*Event for rows.Next() { e := new(Event) if err := rows.Scan(&e.ID, &e.Name, &e.StartTime, &e.EventUsers); err !
Note:array_to_jsonandrow_to_jsonhave the same behavior asto_jsonexcept for offering a pretty-printing option. The behavior described forto_jsonlikewise applies to each individual value converted by the other JSON creation functions. Note:Thehstoreextension has a cast fromhstoretojson, so thath...
The problem is that I can't work out how to do this. The only real option I've found is a complete r...gojs - adding port controllers I have a node template in go.js with a "topArray" that might contain a several ports like in this example. For each top port I want to ...