https://github.com/aobt/sqlmapper

sqlmapper is a light mapper between go-struct and table-rows in db
https://github.com/aobt/sqlmapper

db go golang mapper mysql sql struct table

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sqlmapper is a light mapper between go-struct and table-rows in db

• Host: GitHub
• URL: https://github.com/aobt/sqlmapper
• Owner: aobt
• License: mit
• Created: 2018-04-19T09:43:24.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2020-09-10T06:14:15.000Z (over 4 years ago)
• Last Synced: 2024-10-16T16:18:56.724Z (2 months ago)
• Topics: db, go, golang, mapper, mysql, sql, struct, table
• Language: Go
• Homepage:
• Size: 9.77 KB
• Stars: 103
• Watchers: 5
• Forks: 48
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
##### `sqlmapper` is a light mapper between `golang struct` and `table rows` in db

#### example

We need to read/write a table in db, like:

```sql

CREATE TABLE `test_table` (

  `field_key` varchar(64) NOT NULL DEFAULT '',

  `field_one` varchar(64) DEFAULT NULL,

  `field_two` tinyint(1) DEFAULT NULL,

  `field_thr` int(12) DEFAULT NULL,

  `field_fou` float DEFAULT NULL,

  PRIMARY KEY (`field_key`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

```

In golang, we create a struct corresponding to the table, like:

```go

// struct in go such as:

type DemoRow struct {

	FieldKey string  `sql:"field_key"`

	FieldOne string  `sql:"field_one"`

	FieldTwo bool    `sql:"field_two"`

	FieldThr int64   `sql:"field_thr"`

	FieldFou float64 `sql:"field_fou"`

}

```

Then, we can execute `SELECT`/`INSERT`/`UPDATE`/`DELETE` 

without long `Hard-Code` sql string which is easy to make mistakes.

#### sample (follow [fields_map_test.go](https://github.com/arthas29/sqlmapper/blob/master/fields_map_test.go) for more):

```go

// select single row

// Query by primary key (field[0])

func QueryByKey(ctx context.Context, tx *sql.Tx, db *sql.DB, fieldKey string) (

	*DemoRow, error) {

	var row DemoRow

	row.FieldKey = fieldKey

	fm, err := NewFieldsMap(table, &row)

	if err != nil {

		return nil, err

	}

	objptr, err := fm.SQLSelectByPriKey(ctx, tx, db)

	if err != nil {

		return nil, err

	}

	return objptr.(*DemoRow), nil

}

    

```