anonymous-query-scan

go-sql-driver/sql just can't do marshal anonymous query scan correctly

Detail

// ScanAnonymousRows scan anonymous rows without predefined struct, using simply converter match with sql types
// cols type related with time(datetime,date,timestamp) will be converted to local time, timestamp will be datetime, json will be json
// return format likes: [[number, 'string', '0000-00-00T00:00:00Z',...]...]
func ScanAnonymousRows(rows *sql.Rows) ([][]any, error) {}

// ScanAnonymousMappedRows scan anonymous rows without predefined struct, using grafana converter match with mysql types
// cols type related with time, datetime, date, timestamp will be converted to local time, timestamp will be number
// return format likes: [{number, 'string', '0000-00-00T00:00:00±0:00',...}...]
func ScanAnonymousMappedRows(rows *sql.Rows) ([]map[string]any, error) {}

// DeprecatedScanAnonymousRows scan anonymous rows without predefined struct, using simply converter match with sql types
// cols type related with time, datetime, date, timestamp will be converted to utc time, timestamp will be datetime, json will be string
// return format likes: [[number, 'string', '0000-00-00T00:00:00Z',...]...]
func DeprecatedScanAnonymousRows(rows *sql.Rows) ([][]any, error) {}

// DeprecatedScanAnonymousMappedRows scan anonymous rows without predefined struct, using simply converter match with sql types
// cols type related with time, datetime, date, timestamp will be converted to utc time, timestamp will be datetime, json will be string
// return format likes: [{'col1': number, 'col2': 'string', 'col3': '0000-00-00T00:00:00Z',...}...]
func DeprecatedScanAnonymousMappedRows(rows *sql.Rows) ([]map[string]any, error) {}

How-To

install

go get -u https://github.com/naughtyGitCat/anonymous-query-scan/mysql

usage

import (
    "encoding/json"
    "fmt"
    _ "github.com/go-sql-driver/mysql"
    mysql "github.com/naughtyGitCat/anonymous-query-scan/mysql"
)
func main() {
    db, err := sql.Open("mysql", mysqlConnectionStr)
	if err != nil {
		panic(err)
    }
    rows, err := db.Query("select * from user")
    if err != nil {
        panic(err)
    mappedRows, err := mysql.ScanAnonymousMappedRows(rows)
    if err != nil {
        return nil, err
    }
    rowBytes, err := json.Marshal(mappedRows)
    if err != nil {
        return nil, err
    }
	fmt.Println(string(bytes))
}

Ref

• https://dev.mysql.com/doc/refman/8.4/en/data-types.html
• https://stackoverflow.com/questions/42774467/how-to-convert-sql-rows-to-typed-json-in-golang
• https://stackoverflow.com/questions/55995917/reverse-of-reflect-typeof
• https://stackoverflow.com/questions/14177862/how-to-marshal-a-byte-uint8-array-as-json-array-in-go/78662958#78662958
• https://stackoverflow.com/questions/34089750/marshal-byte-to-json-giving-a-strange-string
• https://github.com/grafana/grafana-plugin-sdk-go
• https://github.com/go-sql-driver/mysql/wiki/Examples
• ISSUE-407 Returned values are always []byte