Oracle/SQL Query issue - oracle

Question

I am sort of a newbie to oracle/sql. I am trying to pull from the same column different values and add them with some other information. The other information is not the issue it is trying to count and add here the problem comes in.
I am connecting to an oracle database. Here is what i have
SELECT
EV.PUBLIC_DESCRIPTION,
EV.EVENT_DATE,
ES.PRICE,
BT.BUYER_TYPE_CODE,
PCA.ADDR1,
PCA.ADDR2,
PCA.CITY,
PCA.POSTAL_CODE,
PCE.EMAIL,
PC.FORMATTED_NAME,
PCP.PHONE_NUMBER,
PCP.SECONDARY,
SUM(COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRADLT' THEN 1 ELSE 0 END) + COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRADTE' THEN 1 ELSE 0 END) + COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRSTND' THEN 1 ELSE 0 END) + COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GSTDTE' THEN 1 ELSE 0 END) + COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GROUDI' THEN 1 ELSE 0 END)) AS "Adults",
SUM(COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRCHILD' THEN 1 ELSE 0 END) + COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRCHTE' THEN 1 ELSE 0 END)) AS 'Paid Child',
SUM(COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRPCH' THEN 1 ELSE 0 END)) AS 'Free Child',
SUM(COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRCOMP' THEN 1 ELSE 0 END)) AS 'Comps'
FROM EVENT EV
INNER JOIN EVENT_SEAT ES ON EV.EVENT_ID = ES.EVENT_ID
INNER JOIN BUYER_TYPE BT ON ES.BUYER_TYPE_ID = BT.BUYER_TYPE_ID
INNER JOIN PATRON_ORDER PO ON ES.ORDER_ID = PO.ORDER_ID
INNER JOIN PATRON_ACCOUNT PA ON ES.ATTENDING_PATRON_ACCOUNT_ID = PA.PATRON_ACCOUNT_ID
INNER JOIN PATRON_CONTACT PC ON PA.PATRON_ACCOUNT_ID = PC.PATRON_ACCOUNT_ID
INNER JOIN PATRON_CONTACT_ADDRESS PCA ON PC.PATRON_ACCOUNT_ID = PCA.PATRON_ACCOUNT_ID
INNER JOIN PATRON_CONTACT_EMAIL PCE ON PCA.PATRON_ACCOUNT_ID = PCE.PATRON_ACCOUNT_ID
INNER JOIN PATRON_CONTACT_PHONE PCP ON PCE.PATRON_ACCOUNT_ID = PCP.PATRON_ACCOUNT_ID
GROUP BY EV.PUBLIC_DESCRIPTION, EV.EVENT_DATE
ORDER BY ES.TRANSACTION_ID DESC, PCP.SECONDARY DESC, PCP.PHONE_NUMBER DESC, PC.FORMATTED_NAME DESC, PCE.EMAIL DESC, PCA.POSTAL_CODE DESC, PCA.CITY DESC, PCA.ADDR2 DESC, PCA.ADDR1 DESC, BT.BUYER_TYPE_CODE DESC, ES.PRICE DESC;
any help would be greatly appreciated

Answer 1

You need to decide which technique you want to use, currently you are using 2 techniques and they are colliding.
For this you must know: COUNT() will increment by one for every NON-NULL value
So, to use COUNT() with a case expression do this
COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRSTND' THEN 1 END)
or
COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRSTND' THEN 1 ELSE NULL END)
OR, don't use COUNT(), use SUM() instead
SUM(CASE WHEN BT.BUYER_TYPE_CODE = 'GRSTND' THEN 1 ELSE 0 END)
To add conditions together, I suggest you use the case expression better
Instead of something like this:
, COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRADLT' THEN 1 END)
+ COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRADTE' THEN 1 END)
+ COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRSTND' THEN 1 END)
+ COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GSTDTE' THEN 1 END)
+ COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GROUDI' THEN 1 END) AS "Adults"
Use this:
COUNT(CASE WHEN BT.BUYER_TYPE_CODE IN ('GRADLT','GRADTE','GRSTND','GSTDTE','GROUDI') THEN 1 ELSE NULL END)
There is also an issue with your GROUP BY, which MUST contain ALL non-aggregating columns. I think your query should look more like this:
SELECT
EV.PUBLIC_DESCRIPTION
, EV.EVENT_DATE
, ES.PRICE
/* , BT.BUYER_TYPE_CODE */
, PCA.ADDR1
, PCA.ADDR2
, PCA.CITY
, PCA.POSTAL_CODE
, PCE.EMAIL
, PC.FORMATTED_NAME
, PCP.PHONE_NUMBER
, PCP.SECONDARY
, COUNT(CASE WHEN BT.BUYER_TYPE_CODE IN ('GRADLT', 'GRADTE', 'GRSTND', 'GSTDTE', 'GROUDI') THEN 1 ELSE NULL END) AS "Adults"
, COUNT(CASE WHEN BT.BUYER_TYPE_CODE IN ('GRCHILD', 'GRCHTE', 'GRPCH', 'GRCOMP') THEN 1 ELSE NULL END) AS "Free Child"
, COUNT(CASE WHEN BT.BUYER_TYPE_CODE = 'GRCOMP' THEN 1 ELSE NULL END) AS "Comps"
FROM EVENT EV
INNER JOIN EVENT_SEAT ES
ON EV.EVENT_ID = ES.EVENT_ID
INNER JOIN BUYER_TYPE BT
ON ES.BUYER_TYPE_ID = BT.BUYER_TYPE_ID
INNER JOIN PATRON_ORDER PO
ON ES.ORDER_ID = PO.ORDER_ID
INNER JOIN PATRON_ACCOUNT PA
ON ES.ATTENDING_PATRON_ACCOUNT_ID = PA.PATRON_ACCOUNT_ID
INNER JOIN PATRON_CONTACT PC
ON PA.PATRON_ACCOUNT_ID = PC.PATRON_ACCOUNT_ID
INNER JOIN PATRON_CONTACT_ADDRESS PCA
ON PC.PATRON_ACCOUNT_ID = PCA.PATRON_ACCOUNT_ID
INNER JOIN PATRON_CONTACT_EMAIL PCE
ON PCA.PATRON_ACCOUNT_ID = PCE.PATRON_ACCOUNT_ID
INNER JOIN PATRON_CONTACT_PHONE PCP
ON PCE.PATRON_ACCOUNT_ID = PCP.PATRON_ACCOUNT_ID
GROUP BY
EV.PUBLIC_DESCRIPTION
, EV.EVENT_DATE
, ES.PRICE
/* , BT.BUYER_TYPE_CODE */
, PCA.ADDR1
, PCA.ADDR2
, PCA.CITY
, PCA.POSTAL_CODE
, PCE.EMAIL
, PC.FORMATTED_NAME
, PCP.PHONE_NUMBER
, PCP.SECONDARY
/* check all these columns exist in the select clause
ORDER BY
ES.TRANSACTION_ID DESC
, PCP.SECONDARY DESC
, PCP.PHONE_NUMBER DESC
, PC.FORMATTED_NAME DESC
, PCE.EMAIL DESC
, PCA.POSTAL_CODE DESC
, PCA.CITY DESC
, PCA.ADDR2 DESC
, PCA.ADDR1 DESC
, BT.BUYER_TYPE_CODE DESC
, ES.PRICE DESC
*/
When you come the the final clause: ORDER BY you can ONLY reference columns that exist in the select clause. This example would FAIL
select column1 from table1 group by column1 order by fred
but this would work:
select column1 from table1 group by column1 order by column1

Answer 2

Your column aliases 'Paid Child', 'Free Child', 'Comps' should not be wrapped in single quotes. You should be using double quotes like you are already for "Adults".
So they should instead be:
"Paid Child"
"Free Child"
"Comps"
Or better yet, consider naming your aliases without any spaces, so you don't have to worry about wrapping the aliases in anything, like this:
paid_child
free_child
comps
Documentation on Database Object Names and Qualifiers:
Database Object Naming Rules
Every database object has a name. In a SQL statement, you represent the name of an object with a quoted identifier or a nonquoted identifier.
A quoted identifier begins and ends with double quotation marks ("). If you name a schema object using a quoted identifier, then you must use the double quotation marks whenever you refer to that object.
A nonquoted identifier is not surrounded by any punctuation.
...
Although column aliases, table aliases, usernames, and passwords are not objects or parts of objects, they must also follow these naming rules unless otherwise specified in the rules themselves.