SQL Analyzer


Explain Extended

ID Select Type Table Access Type Possible Keys Used Key Key Length Ref Rows Examined Filtered Extra
1 SIMPLE 0 0.00% Impossible WHERE noticed after reading const tables

Original SQL Statement

select 
  use_only_adult 
from 
  gd_goods 
where 
  goodsno = ''

Converted SQL Statement (MySQL Optimizer)

/* select#1 */
select 
  NULL AS `use_only_adult` 
from 
  `pravs`.`gd_goods` 
where 
  0