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db.go
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db.go
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package nested
import (
"database/sql"
"log"
"strconv"
)
// SetTableName for query strings
func SetTableName(name string) {
tblName = name
}
func query(db *sql.DB, sql string, args ...interface{}) (records []map[string]string, err error) {
rows, err := db.Query(sql, args...)
if err != nil {
log.Println("Query failed, sql:", sql, " error:", err)
return nil, err
}
defer rows.Close()
columns, _ := rows.Columns()
if len(columns) == 0 {
return records, nil
}
values := make([][]byte, len(columns))
scanArgs := make([]interface{}, len(columns))
for i := range values {
scanArgs[i] = &values[i]
}
for rows.Next() {
err = rows.Scan(scanArgs...)
if err != nil {
log.Println("rows.Scan failed, sql:", sql, " error:", err)
return nil, err
}
record := make(map[string]string)
for i, col := range values {
if col == nil {
record[columns[i]] = ""
} else {
record[columns[i]] = string(col)
}
}
records = append(records, record)
}
return records, nil
}
func atoi(s string) int32 {
i, _ := strconv.ParseInt(s, 10, 32)
return int32(i)
}
func itoa(i int32) string {
return strconv.FormatInt(int64(i), 10)
}
func atoi64(s string) int64 {
i, _ := strconv.ParseInt(s, 10, 64)
return i
}