// 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);
}