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update guidance logic to be the shown price which is great of target or last price but capped at list

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This commit is contained in:
Paul Trowbridge 2025-08-28 00:19:27 -04:00
parent e047e7f39b
commit 2cc7204c7f
3 changed files with 38 additions and 42 deletions
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8
procs/approval_logic.ms.sql
View File

@ -1,6 +1,6 @@
-- CREATE OR ALTER FUNCTION pricing.guidance_logic;
-- CREATE OR ALTER FUNCTION pricing.approval_logic;
CREATE OR ALTER FUNCTION pricing.guidance_logic(
CREATE OR ALTER FUNCTION pricing.approval_logic(
@target numeric(20,5),
@last_norm numeric(20,5),
@list_eff numeric(20,5),
@ -10,8 +10,8 @@ CREATE OR ALTER FUNCTION pricing.guidance_logic(
@cap_list_pct numeric(10,5) = 1.00
)
RETURNS @ret TABLE (
guidance_price numeric(20,5),
guidance_reason nvarchar(4000)
approval_price numeric(20,5),
approval_reason nvarchar(4000)
)
AS
BEGIN

48
procs/guidance_logic.ms.sql
View File

@ -31,34 +31,6 @@ BEGIN
-- Pick starting base price
SET @base_price = COALESCE(@target, @last_norm, @list_eff);
-- Step 1: use base price unless it's more than x% below last price
SET @after_floor = @base_price;
IF @last_norm IS NOT NULL
SET @after_floor = ROUND(
CASE WHEN @base_price >= @last_norm*@floor_pct
THEN @base_price
ELSE @last_norm*@floor_pct
END, 5);
-- Step 2: use price from previous step but don't allow it to be x% above last price
SET @after_cap_last = @after_floor;
IF @last_norm IS NOT NULL
SET @after_cap_last = ROUND(
CASE WHEN @after_floor <= @last_norm*@cap_last_pct
THEN @after_floor
ELSE @last_norm*@cap_last_pct
END, 5);
-- Step 3: use price from last step, but don't allow it to be more than x% above list price
SET @final_price = @after_cap_last;
IF @list_eff IS NOT NULL
SET @final_price = ROUND(
CASE WHEN @after_cap_last <= @list_eff*@cap_list_pct
THEN @after_cap_last
ELSE @list_eff*@cap_list_pct
END, 5);
-- Reason text
SET @reason =
CASE
@ -67,14 +39,22 @@ BEGIN
WHEN @list_eff IS NOT NULL THEN N'Using list price as base'
END;
IF @last_norm IS NOT NULL AND @after_floor > @base_price
SET @reason = N'Last price drop limit';
-- Step 1: use base price less than last price, use last price
IF @base_price < @last_norm
BEGIN
SET @base_price = @last_norm;
SET @reason = N'Last price';
END
IF @last_norm IS NOT NULL AND @after_cap_last < @after_floor
SET @reason = N'Last price increase limit';
IF @list_eff IS NOT NULL AND @final_price < @after_cap_last
SET @reason = N'List price ceiling';
-- Step 2: use price from previous step but don't allow it to be x% above last price
IF @base_price > @list_eff
BEGIN
SET @base_price = @list_eff;
SET @reason = N'List price ceiling';
END
SET @final_price = @base_price;
INSERT INTO @ret VALUES (@final_price, @reason);
RETURN;

22
procs/single_price_call.ms.sql
View File

@ -136,8 +136,8 @@ BEGIN
------------step 6 compute guidance------------
guidance_price NUMERIC(20,5),
guidance_reason NVARCHAR(MAX),
shown_price NUMERIC(20,5),
shown_logic NVARCHAR(MAX),
approval_price NUMERIC(20,5),
approval_reason NVARCHAR(MAX),
------------step 7 build json------------------
expl NVARCHAR(MAX),
ui_json NVARCHAR(MAX)
@ -379,6 +379,8 @@ BEGIN
SET
guidance_price = g.guidance_price
,guidance_reason = g.guidance_reason
,approval_price = a.approval_price
,approval_reason = a.approval_reason
FROM @queue q
CROSS APPLY pricing.guidance_logic(
TRY_CAST(q.tprice AS NUMERIC(20,5)),
@ -391,7 +393,19 @@ BEGIN
1.0,
--cap on list percent
1.0
) g;
) g
CROSS APPLY pricing.approval_logic(
TRY_CAST(q.tprice AS NUMERIC(20,5)),
TRY_CAST(q.last_price_norm AS NUMERIC(20,5)),
TRY_CAST(q.listprice_eff AS NUMERIC(20,5)),
TRY_CAST(q.last_date AS DATE),
--allowable price drop percent
.95,
--cap on last price
1.0,
--cap on list percent
1.0
) a;
--------------------------------------------------------------------------------
-- Step 8: Assemble structured 'expl' JSON from populated columns.
@ -438,6 +452,8 @@ BEGIN
,q.list_relevance AS list_relevance
,q.guidance_price AS guidance_price
,q.guidance_reason AS guidance_reason
,q.approval_price AS approval_price
,q.approval_reason AS approval_reason
-- JSON_QUERY(hist) AS [history]
FOR JSON PATH, WITHOUT_ARRAY_WRAPPER
)