/
DBHelper.go
66 lines (52 loc) · 1.35 KB
/
DBHelper.go
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package db
import "database/sql"
// Update Add, delete and change operations
func Update(connection *sql.DB, sql string, params []interface{}) (sql.Result, error) {
result, err := connection.Exec(sql, params...)
if err != nil {
return nil, err
}
return result, nil
}
// UpdateByTx Add, delete and change operations
func UpdateByTx(tx *sql.Tx, sql string, params []interface{}) (sql.Result, error) {
result, err := tx.Exec(sql, params...)
if err != nil {
return nil, err
}
return result, nil
}
// SelectList Query list based on sql and parameters
func SelectList(connection *sql.DB, sql string, params []interface{}) ([]map[string]string, error) {
rows, err := connection.Query(sql, params...)
if err != nil {
return nil, err
}
return toMap(rows)
}
// toMap Converting query results to map
func toMap(rows *sql.Rows) ([]map[string]string, error) {
cols, err := rows.Columns()
if err != nil {
return nil, err
}
values := make([][]byte, len(cols))
scans := make([]interface{}, len(cols))
for i := range values {
scans[i] = &values[i]
}
var rowLine = make([]map[string]string, 0, 5)
for rows.Next() {
err = rows.Scan(scans...)
if err != nil {
return nil, err
}
row := make(map[string]string, 5)
for k, v := range values {
key := cols[k]
row[key] = string(v)
}
rowLine = append(rowLine, row)
}
return rowLine, nil
}