When I Run Below Query I Am Getting This Error " Union Types Text And Bigint Cannot Be Matched "

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SQL

SELECT 
	1 AS STEP
	,'' AS ProviderName
	,'' AS Procedurecode
	,Claimid
	,Patient_First_Name
	,Patient_Last_Name
	,DOS
	,SUM(COALESCE(Total_Charge,0))
	,SUM(COALESCE(PaidAmount,0))
	,PostedDate
	,CheckEFTDate
	,CheckEFTNo 
FROM table_name 
GROUP BY ProviderName,Claimid,Patient_First_Name,Patient_Last_Name,DOS,PostedDate,CheckEFTDate,CheckEFTNo
UNION ALL
SELECT 
	2 AS STEP
	,'' AS ProviderName
	,'' AS Procedurecode
	,COUNT(Claimid)
	,'' AS Patient_First_Name
	,'' AS Patient_Last_Name
	,NULL::date AS DOS
	,SUM(COALESCE(Total_Charge,0))
	,SUM(COALESCE(PaidAmount,0))
	,NULL::date AS PostedDate
	,NULL::date AS CheckEFTDate
	,'' AS CheckEFTNo 
FROM table_name GROUP BY Claimid

Posted 20-Jul-15 5:33am

Member 10256268

Updated 20-Jul-15 5:55am

Wendelius

v2

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[no name] 20-Jul-15 11:55am

For UNION each field datatype Needs to match. Most probably this is not the case for "Claimid" vs. COUNT(Claimid). If the before (Claimid) is the case, you can work around by casting COUNT(Claimid) to CHAR(x) to match Clameid.

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Wendelius · Answer 1 · 2015-07-20T05:57:00

Solution 1

As the error says, you have mismatching column types on both sides of the UNION. The column types between both queries must match.

So go through each column and compare them to each other. For example: Is ClaimId in query 1 same type as COUNT(Claimid) in query 2

Posted 20-Jul-15 5:57am

Wendelius

Updated 20-Jul-15 5:58am

v2