Today while inside a client's production system, I found a SQL Server query that contained an unfamiliar syntax. In the below example, what does the *= operator do? I could not find any mention of it on MSDN. The query does execute and return data. As far as anyone knows, this has been in the system since they were using SQL Server 2000, but they are now running 2005.
declare @nProduct int
declare @iPricingType int
declare @nMCC int
set @nProduct = 4
set @iPricingType = 2
set @nMCC = 230
--Build SQL for factor matrix
Select distinct
base.uiBase_Price_ID,
base.nNoteRate,
base.sDeliveryOpt,
IsNull(base.nPrice,0) as nPrice,
IsNull(base.nPrice,0) + Isnull(fact.nFactor,0) as nAdjPrice,
base.iProduct_ID,
fact.iPosition as fiPosition,
base.iPosition,
CONVERT(varchar(20), base.dtDate_Updated, 101) + ' ' + CONVERT(varchar(20), base.dtDate_Updated, 108) as 'dtDate_Updated',
fact.nFactor,
fact.nTreasFactor,
product.sProduct_txt ,
pfi.sPFI_Name,
mccprod.nServicing_Fee,
fact.nNoteRate as fNoteRate,
mcc.nLRA_Charge as nLRA
From
tbl_Base_Prices base, tbl_Factors fact, tbl_Product product, tbl_PFI pfi, tbl_MCC mcc, tbl_MCC_Product mccprod
Where
base.iProduct_ID = @nProduct
And base.iProduct_ID *= fact.iProduct_ID
And base.iPosition *= fact.iPosition
And base.nNoteRate *= fact.nNoteRate
And base.iPricing_Type = @iPricingType
And fact.iMCC_ID = @nMCC
And fact.iProduct_ID = @nProduct
And mcc.iMCC_ID = @nMCC
And mcc.iPFI_ID = pfi.iPFI_ID
And mccprod.iMCC_ID = @nMCC
And mccprod.iProduct_ID = @nProduct
And base.iProduct_ID = product.iProduct_ID
and fact.iPricing_Type= @iPricingType
Order By
base.nNoteRate, base.iPosition