// 获取 DatetTime 类型的 SQL 片断(包括DateTime和TimeStamp) protected override string GetSqlValueByDateTime(object value, object dbType, int?precision) { // 默认精度为0 string format = "yyyy-MM-dd HH:mm:ss"; MySqlDbTypeInfo dbTypeInfo = MySqlDbTypeInfo.Create(dbType); if (dbTypeInfo != null && dbTypeInfo.IsDate) { format = "yyyy-MM-dd"; } else if (dbTypeInfo != null && (dbTypeInfo.IsDateTime || dbTypeInfo.IsDateTime2)) { string pad = string.Empty; if (precision != null && precision.Value > 0) { pad = "f".PadLeft(precision.Value > 6 ? 6 : precision.Value, 'f'); } if (!string.IsNullOrEmpty(pad)) { format = string.Format("yyyy-MM-dd HH:mm:ss.{0}", pad); } } string result = this.EscapeQuote(((DateTime)value).ToString(format), false, false); return(result); }
// 增加一个参数 protected override IDbDataParameter AddParameter(object value, object dbType, int?size = null, int?precision = null, int?scale = null, ParameterDirection?direction = null) { MySqlParameter parameter = (MySqlParameter)base.AddParameter(value, dbType, size, precision, scale, direction); // 补充 DbType MySqlDbTypeInfo dbTypeInfo = MySqlDbTypeInfo.Create(dbType); if (dbTypeInfo != null && dbTypeInfo.DbType != null) { parameter.DbType = dbTypeInfo.DbType.Value; } else if (dbTypeInfo != null && dbTypeInfo.SqlDbType != null) { parameter.MySqlDbType = dbTypeInfo.SqlDbType.Value; } if (size != null && (size.Value > 0 || size.Value == -1)) { parameter.Size = size.Value; } if (precision != null && precision.Value > 0) { parameter.Precision = (byte)precision.Value; } if (scale != null && scale.Value > 0) { parameter.Scale = (byte)scale.Value; } return(parameter); }