Sql query to get data from audit history for opportunity entity

HI All,

This query get the data from Audit history table.

I query the audit table to get where entityname  = opportunty.

I need to also filter it by attributename = 'funnelphase'

how do I do this.

Declare @attributes VarChar(Max), @values VarChar(Max), @ObjectTypeCode int, @LogDateTime DateTime, @RecordId uniqueidentifier, @UserId Uniqueidentifier, @ActionId int

Declare @Result Table(AttributeId int, Value VarChar(Max),CurrentValue VarChar(Max), ObjectTypeCode int,
LogDateTime DateTime, RecordId uniqueidentifier, UserId uniqueidentifier, ActionId int, EntityName nvarchar(128),AttributeName1 nvarchar(100))
Declare @CurrentAttribute VarChar(max), @CurrentValue VarChar(Max)

DECLARE DataAuditCursor CURSOR FOR
Select all
Case When IsNull(a.AttributeMask, '') = '' Then '' Else Substring(a.AttributeMask, 2, Len(a.AttributeMask) - 2) End
,a.ChangeData
,a.ObjectTypeCode
,a.CreatedOn
,a.ObjectId
,a.UserId
,a.[Action]
From dbo.AuditBase a
where a.AttributeMask is not null and a.AttributeMask <> ''
OPEN DataAuditCursor

FETCH NEXT FROM DataAuditCursor
INTO @attributes, @values, @ObjectTypeCode, @LogDateTime, @RecordId, @UserId, @ActionId

WHILE @@FETCH_STATUS = 0
BEGIN
WHILE CHARINDEX(',',@attributes,0) <> 0
BEGIN
SELECT
@CurrentAttribute=RTRIM(LTRIM(SUBSTRING(@attributes,1,CHARINDEX(',',@attributes,0)-1))),
@attributes=RTRIM(LTRIM(SUBSTRING(@attributes,CHARINDEX(',',@attributes,0)+1,LEN(@attributes)))),
@CurrentValue=RTRIM(LTRIM(SUBSTRING(@values,1,CHARINDEX('~',@values,0)-(case when CHARINDEX('~',@values,0)<=0 then 0 else 1 End)))),
@values=RTRIM(LTRIM(SUBSTRING(@values,CHARINDEX('~',@values,0)+1,LEN(IsNull(@values,0)))))

IF LEN(@CurrentAttribute) > 0
INSERT INTO @Result Values(CAST(@CurrentAttribute as nvarchar), @CurrentValue,@CurrentValue, @ObjectTypeCode, @LogDateTime, @RecordId, @UserId, @ActionId,null,null)
END

INSERT INTO @Result Values((Case When IsNull(@attributes, '') = '' Then Null Else CAST(@attributes as nvarchar) End), @values,@CurrentValue, @ObjectTypeCode, @LogDateTime, @RecordId, @UserId, @ActionId,null,null)

FETCH NEXT FROM DataAuditCursor
INTO @attributes, @values, @ObjectTypeCode, @LogDateTime, @RecordId, @UserId, @ActionId
END

CLOSE DataAuditCursor;
DEALLOCATE DataAuditCursor;

Update r
SET r.EntityName = m.Name
from @Result r
inner join  MetadataSchema.Entity m
on  r.ObjectTypeCode = m.ObjectTypeCode

Select
r.EntityName
,r.AttributeName1
,u.fullname UserName
,r.Value OldFieldValue
,r.RecordId ModifiedRecordId
From @Result r
Left Join FilteredSystemUser u On r.UserId = u.systemuserid
where r.EntityName='Opportunity' ;