Error in the mysql syntax .I have used two tables to join them using inner join

```
update wp_postmeta 
set  sku.meta_value=seo.`Meta Description`  
From sanitaryseo AS  seo 
INNER JOIN wp_postmeta AS sku 
ON sku.meta_value = seo.`product code`
where sku.meta_key='_yoast_wpseo_metadesc' 

```