SQL Subquery Questions - mysql

Question

I am trying to combine these 2 queries in such a way to determine who the PI is that owns equipment (>$100K value). I have the ability to find all the equipment one PI owns that is greater then 100k. I also have the ability to see all the PIs. I just cannot get these 2 queries to combine. I have tried with a WHERE subquery and an EXIST subquery. I want to be able to find all the equipment (matched with its PI owner) where the PI exists in query #2.
Query #1 for finding equipment of a specific PI
select Account_No,Inventory_No,Building_No,Room_No,CDDEPT,Location,Normalized_MFG,Manufacturer_Name,Normalized_Model,Name,Serial_Code,CONCAT( '$', FORMAT( Cost, 2 ) ) as Cost, Equipment_Inventory_Normalized.Active
from Temp_Equipment_Inventory.Equipment_Inventory_Normalized, `paul`.`ROOM`, `paul`.`BLDG`, `paul`.`LABORATORY`, `paul`.`PERSON`
where (`PERSON`.`ID` = `LABORATORY`.`PI_ID` OR `PERSON`.`ID` = `LABORATORY`.`SUPV_ID`)
AND `LABORATORY`.`RM_ID` = `ROOM`.`ID`
AND `LABORATORY`.`ACTIVE` = '1'
AND `ROOM`.`BLDG_ID` = `BLDG`.`ID`
AND ((
`BLDG`.`BLDGNUM` = Equipment_Inventory_Normalized.Building_No
AND Equipment_Inventory_Normalized.Actual_Building IS NULL
AND (`BLDG`.`BLDGNUM` != '1023' AND `LABORATORY`.`OTHER_LEVEL` != '1' AND `ROOM`.`RMNUM` != '0199')
)OR (
`BLDG`.`BLDGNUM` = Equipment_Inventory_Normalized.Actual_Building AND
(`BLDG`.`BLDGNUM` != '1023' AND `LABORATORY`.`OTHER_LEVEL` != '1' AND `ROOM`.`RMNUM` != '0199')
))
AND ((
`ROOM`.`RMNUM` = Equipment_Inventory_Normalized.Room_No
AND Equipment_Inventory_Normalized.Actual_Room IS NULL
)OR (
`ROOM`.`RMNUM` = Equipment_Inventory_Normalized.Actual_Room
))
AND Equipment_Inventory_Normalized.Active !=0
AND SurplusPending != '1'
AND Cost >= 100000
AND `PERSON`.`CANNUM`='810010787'
Query 2 that finds all the PIs
select distinct i.CAN
from CGWarehouse.CCGV10WC w
inner join CGWarehouse.CCGV10IC i
on w.PROJECT_NUMBER=i.SPONSORED_PROJECT
and w.SEQUENCE_NUMBER=i.PROJECT_SEQUENCE
where w.STATUS='A'
and i.PRIN_INVEST_CODE='Y'
and i.DEL_CODE!='Y'
and i.CAN IS NOT NULL

Answer 1

Perhaps you're looking for the IN keyword in your WHERE clause?
Forgive me, but I had to clean up the formatting of your query a little...it's kinda my OCD thing:
SELECT
Account_No,
Inventory_No,
Building_No,
Room_No,
CDDEPT,
Location,
Normalized_MFG,
Manufacturer_Name,
Normalized_Model,
Name,
Serial_Code,
CONCAT('$', FORMAT( Cost, 2 )) AS Cost,
Equipment_Inventory_Normalized.Active
FROM
Temp_Equipment_Inventory.Equipment_Inventory_Normalized a,
`paul`.`ROOM`,
`paul`.`BLDG`,
`paul`.`LABORATORY`,
`paul`.`PERSON`
WHERE
(`PERSON`.`ID` = `LABORATORY`.`PI_ID` OR `PERSON`.`ID` = `LABORATORY`.`SUPV_ID`)
AND `LABORATORY`.`RM_ID` = `ROOM`.`ID`
AND `LABORATORY`.`ACTIVE` = '1'
AND `ROOM`.`BLDG_ID` = `BLDG`.`ID`
AND (
(
`BLDG`.`BLDGNUM` = Equipment_Inventory_Normalized.Building_No
AND Equipment_Inventory_Normalized.Actual_Building IS NULL
AND `BLDG`.`BLDGNUM` != '1023'
AND `LABORATORY`.`OTHER_LEVEL` != '1'
AND `ROOM`.`RMNUM` != '0199'
) OR (
`BLDG`.`BLDGNUM` = Equipment_Inventory_Normalized.Actual_Building
AND `BLDG`.`BLDGNUM` != '1023'
AND `LABORATORY`.`OTHER_LEVEL` != '1'
AND `ROOM`.`RMNUM` != '0199'
)
)
AND (
(
`ROOM`.`RMNUM` = Equipment_Inventory_Normalized.Room_No
AND Equipment_Inventory_Normalized.Actual_Room IS NULL
) OR (
`ROOM`.`RMNUM` = Equipment_Inventory_Normalized.Actual_Room
)
)
AND Equipment_Inventory_Normalized.Active !=0
AND SurplusPending != '1'
AND Cost >= 100000
AND `PERSON`.`CANNUM` IN ( /* this assumes that the `PERSON`.`CANNUM` column matches up with the CGWarehouse.CCGV10IC.CAN column */
SELECT DISTINCT i.CAN
FROM
CGWarehouse.CCGV10WC w
INNER JOIN CGWarehouse.CCGV10IC i ON w.PROJECT_NUMBER=i.SPONSORED_PROJECT AND w.SEQUENCE_NUMBER=i.PROJECT_SEQUENCE
WHERE
w.STATUS='A'
AND i.PRIN_INVEST_CODE='Y'
AND i.DEL_CODE!='Y'
AND i.CAN IS NOT NULL
)