sql - Invalid Identifier. Is it the concat code? -

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i keep getting error "invalid identifier" , know columns right... thoughts?

also, know concat coding kind of messy. offered code it: 

,mp_asin.parent_asin_name || ', ' || mp_asin.color_name teen

which better?

select    mp_asin.category_code category_id     ,mp_asin.subcategory_code subcategory    ,mp_asin.parent_asin    ,mp_asin.parent_asin_name     ,mp_asin.color_name color_name     ,mp_asin.product_site_launch_day psld     ,concat(mp_asin.parent_asin_name, concat(',', concat(' ',mp_asin.color_name))) teen     ,mp.brand_code brand_code     ,mp.replenishment_code replen_code     ,mp.replenishment_category_id replen_tier    ,mp.asin asin    , min(mp.replenishment_code) on (partition (concat(mp_asin.parent_asin_name, concat(',', concat(' ',mp_asin.color_name))))) min_teen_rc    , max(mp.replenishment_code) on (partition (concat(mp_asin.parent_asin_name, concat(',', concat(' ',mp_asin.color_name))))) max_teen_rc  d_mp_asins mp  min_teen_rc <> max_teen_rc , mp.product_category =('30905500')  , mp_asin.subcategory_code =('30905560') , mp.region_id = 1 , mp.marketplace_id = 1 , mp.gl_product_group = 309  group mp_asin.category_code ,mp_asin.subcategory_code  ,mp_asin.parent_asin ,mp_asin.parent_asin_name ,mp_asin.color_name ,mp_asin.product_site_launch_day ,concat(mp_asin.parent_asin_name, concat(',', concat(' ',mp_asin.color_name))) ,mp.brand_code ,mp.replenishment_code ,mp.replenishment_category_id ,mp.asin

i think missed table alias mp_asin. see 1 table in from clause.

this better , more readable:

mp_asin.parent_asin_name || ', ' || mp_asin.color_name teen


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