Question

有人可以告诉我我的查询出了什么问题吗？我肯定知道where子句中的case语句肯定有问题。没有Case语句，此查询将正常运行。

错误– SELECT失败。 3707：语法错误，应该是类似“）”和“> =”之间的“ END关键字”

SELECT 
    mp.chnl_name AS mp_channel,
    fsk.sku_prod_id AS pro_id,
    fsk.dateint  AS avlbl_dt,
    fsk.sku_num AS sku,
    fsk.upc_txt AS UPC,
    Coalesce(fsk.brand_name,'N/A') AS brand,
    fsk.ruckload AS LTL_Flag,
    fsk.price_amt AS item_selling_price,
    fsk.on_hand_unit_qty AS qoh,
    fsk.netpropt AS profite,
    (fsk.price_amt  + fsk.shpg_amt) AS lms,
    (GP)*100 AS net_pct
FROM EDW.ITEM_AVLBL mp
JOIN EDW.FULL_SKU fsk ON mp.item_id = fsk.item_id
JOIN  EDW.SHORT_SKU ssk ON ssk.sh_sku_id = fsk.sh_sku_id
WHERE 1=1
    AND mp.chnl_name  LIKE '%google%'  ---------- This is a prompt but I hard coded to test
    AND fsk.item_create_dt >=  '2019-10-20'
    AND  net_pct >= 10
    AND CASE WHEN mp.chnl_name  = 'CA_FACEBOOK'  THEN  ((GP)*100)  >= 7 ELSE  fsk.first_cost > 500 END
GROUP BY 1,2,3,4,5,6,7,8,9,10,11,fsk.first_cost

有人可以告诉我如何解决此问题吗？

Answer 1

案例在这里不起作用，您可以重写以使用AND和OR

AND ( (mp.chnl_name  = 'CA_FACEBOOK' AND ((GP)*100)  >= 7 ) 
    OR (mp.chnl_name  != 'CA_FACEBOOK' AND fsk.first_cost > 500) )

根据您在下面所说的内容，将以下内容添加到where：

AND ( (mp.chnl_name  = 'CA_FACEBOOK' AND ((GP)*100)  >= 7 AND fsk.first_cost > 500)
      OR mp.chnl_name  != 'CA_FACEBOOK'
    )

Answer 2

请勿使用CASE：

( (mp.chnl_name = 'CA_FACEBOOK'  AND  ((GP)*100)  >= 7) OR
  (mp.chnl_name <> 'CA_FACEBOOK' AND fsk.first_cost > 500)
)

问题是Teradata不支持从CASE表达式返回布尔类型。因此，您在THEN子句中所做的比较在语法上不会被理解。

编辑：

根据您的评论，您想要的逻辑是：

( (mp.chnl_name = 'CA_FACEBOOK'  AND  ((GP)*100)  >= 7 AND fsk.first_cost > 500
  ) OR
  (mp.chnl_name <> 'CA_FACEBOOK' )
)

Answer 3

这可能是您想要的：

WHERE 
  (mp.chnl_name <> 'CA_FACEBOOK' 
    AND mp.chnl_name  LIKE '%google%'  ---------- This is a prompt but I hard coded to test
    AND fsk.item_create_dt >=  '2019-10-20'
    AND  net_pct >= 10
OR (( mp.chnl_name  = 'CA_FACEBOOK' AND GP*100  >= 7 AND fsk.first_cost > 500))

但是，如果要在应用程序中创建此WHERE条件（1=1似乎表明了这一点），则最好在此应用逻辑。

Answer 4

根据您的评论，应该将原始的ELSE条件改为“与”：

tree

我不希望您要GROUP_first_cost。并且隐式地假定mp.chnl_name不为NULL，因此它等于CA_FACEBOOK或不等于。如果允许使用NULL，则还需要明确检查该条件，例如from selenium import webdriver from selenium.webdriver.firefox.options import Options from selenium.webdriver.firefox.firefox_binary import FirefoxBinary ff_options = Options() #profile binary = FirefoxBinary("C:\\Program Files\\Mozilla Firefox\\firefox.exe") profile = webdriver.FirefoxProfile('C:\\Users\\bravoj\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles\\7k4o5psw.CCC Deafualt') ff_driver = webdriver.Firefox(firefox_profile=profile, firefox_binary=binary, executable_path='C:\\Users\\bravoj\Downloads\\geckodriver.exe') #fire fox driver ff_driver.get('about:profiles')。

Answer 5

这就是我的工作方式，但我可能会在说明中混淆你们。非常感谢您的快速回复。非常感谢您的帮助和时间。

AND (CASE WHEN mp.sls_trans_web_orgn_chnl_name  = 'CA_FACEBOOK'  AND   fsk.full_sku_unit_first_cost  <  500 AND  (juice/NullIfZero(gms))*100  >= 7 THEN 1 
  WHEN mp.sls_trans_web_orgn_chnl_name  <> 'CA_FACEBOOK'  THEN 1 ELSE 0 END ) = 1

Where子句在Teradata上无法正常工作的情况？

5 个答案: