sqljsonsql-servert-sqlfor-json

SQL Server - FOR JSON PATH


I know I need to use FOR JSON to make this work, I just unsure of how to do groups by a certain column for this.

I have the following dataset:

property confirmation exemptions                                taxReasonId                 taxId
0145     29SW8TW9F    2020-05-09: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     2QWKNZM8F    2020-08-07: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     2QWKNZM8F    2020-08-08: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-06-25: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-06-26: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-06-27: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-06-28: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-06-29: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid    
0145     3BM6SV9C3    2020-06-30: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-07-01: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-07-02: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-07-03: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3BM6SV9C3    2020-07-04: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-13: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-14: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-15: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-16: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-17: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-18: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-19: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-20: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-21: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-22: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-23: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-24: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-25: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid
0145     3FY4HQ7RB    2020-05-26: ["occupancy tax","room tax"]  5e61836ed0687c000143d77e    OTA Prepaid

I need to turn each group of "confirmation" into a JSON payload, preferably with an identifier column of "confirmation":

{
    "taxId": "OTAPrepaid",
    "taxReasonId": "5e61836ed0687c000143d77e",
    "exemptions":
    {
        "2020-08-07": ["occupancy tax", "room tax"],
        "2020-08-08": ["occupancy tax", "room tax"]
    }
}

This is the query I am using to get my dataset:

SELECT  res.property, res.confirmationId, CAST(date AS VARCHAR(12)) + ': ' + tax.taxClass AS exemptions, id AS taxReasonId, tax.reasonName AS taxId
    FROM
    (
        SELECT  property, date, confirmationId
            FROM dbo.tb_rguest_reservation_records
                WHERE CAST(property AS INT) IN
                (
                    50,66,74,98,105,149,            --Kentucky, Room Tax Exempt
                    132,                            --South Carolina, Room and Occupancy Tax Exempt
                    11,160,165,167,             --Colorado, Room Tax Exempt
                    19,46,87,88,145,169,191,        --Indiana, Room and Occupancy Tax Exempt
                    116,142,162                 --New Mexico, Room Tax Exempt
                )
                AND ratePlanId IN ('NOPTS','ADVOTC','ADVPLA','ADVHT','OTAPLA','OTAPAO','OTAHT','OTAHOT')
                AND arrivalDate >= CAST(GETDATE() AS DATE)
                AND property = '0145'
    ) res
    LEFT JOIN
    (
        SELECT property, reasonName, id, taxClass
            FROM dbo.tb_rguest_tax_exempt_reasons
                WHERE reasonName = 'OTA Prepaid'

    ) tax
        ON res.property = tax.property
            FOR JSON PATH

When I run the FOR JSON PATH it gives me the following, which is not what I am looking for exactly.

[
    {
        "property": "0145",
        "confirmationId": "74XD3NMWF",
        "exemptions": "2020-03-06: [\"occupancy tax\",\"room tax\"]",
        "taxReasonId": "5e61836ed0687c000143d77e",
        "taxId": "OTA Prepaid"
    },
    {
        "property": "0145",
        "confirmationId": "T6JYFMT6P",
        "exemptions": "2020-03-06: [\"occupancy tax\",\"room tax\"]",
        "taxReasonId": "5e61836ed0687c000143d77e",
        "taxId": "OTA Prepaid"
    },
    {
        "property": "0145",
        "confirmationId": "92DR3M7DB",
        "exemptions": "2020-03-11: [\"occupancy tax\",\"room tax\"]",
        "taxReasonId": "5e61836ed0687c000143d77e",
        "taxId": "OTA Prepaid"
    },

etc...


Solution

  • So this is as ugly of logic as it comes to me, but it works...

    IF OBJECT_ID('tempdb.dbo.##temp', 'U') IS NOT NULL DROP TABLE ##temp;
    IF OBJECT_ID('tempdb.dbo.##temp2', 'U') IS NOT NULL DROP TABLE ##temp2;
    
    DECLARE @query AS NVARCHAR(MAX)
    DECLARE @jsonValue AS NVARCHAR(MAX)
    DECLARE @dateChange DATE
    
    DECLARE @property VARCHAR(4)
        SET @property = '0145'
    
    DECLARE @confirmation VARCHAR(12)
        SET @confirmation = 'C3Q28J82B'
    
    DECLARE @taxClass VARCHAR(100)
        SET @taxClass =
    (
        SELECT taxClass
            FROM dbo.tb_rguest_tax_exempt_reasons
                WHERE property = @property
                AND reasonName = 'OTA Prepaid'
    )
    
    DECLARE @dateColumns AS NVARCHAR(MAX)
        SET @dateColumns =
        STUFF(
        (
            SELECT DISTINCT ',' + QUOTENAME(date)
                FROM dbo.tb_rguest_reservation_records
                    WHERE confirmationId = @confirmation
                    AND property = @property
                        FOR XML PATH(''), TYPE
        ).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
    
    DECLARE @dateCount INT
        SET @dateCount =
    (
        SELECT COUNT(*)
            FROM dbo.tb_rguest_reservation_records
                WHERE confirmationId = @confirmation
                AND property = @property
    )
    
    DECLARE @dateCounter INT
        SET @dateCounter = 1
    
    SET @query =  
    'SELECT *
        INTO ##temp
        FROM
        (
            SELECT res.confirmationId, tax.reasonName AS taxId, tax.id AS taxReasonId, 
                   res.date, JSON_QUERY(tax.taxClass) AS taxClass
                FROM dbo.tb_rguest_reservation_records res
                LEFT JOIN dbo.tb_rguest_tax_exempt_reasons tax
                    ON res.property = tax.property
                        WHERE res.confirmationId = ' + '''' + @confirmation + '''' + '
        ) AS res
        PIVOT
        (
            MIN(res.taxClass)
                FOR [date] IN ('+ @dateColumns +')
        ) AS pvt'
    
    EXEC (@query)
    
    SET @query =
    'DECLARE @jsonValue VARCHAR(MAX)
        SET @jsonValue =
        (
            SELECT  taxId,
                    taxreasonId,
                    ' +
                    REPLACE(
                        REPLACE(
                            REPLACE(
                                @dateColumns, '[', 'JSON_QUERY(['
                                    ), ']', '])'
                            ), ',', ' AS [exemptions.1], ') + ' AS [exemptions.2]' + '
                FROM ##temp
                    FOR JSON PATH
        )
    
    SELECT @jsonValue AS jsonValue
        INTO ##temp2'
    
    EXEC (@query)
    
    SET @jsonValue =
    (
        SELECT jsonValue
            FROM ##temp2
    )
    
    WHILE @dateCounter <= @dateCount
    BEGIN
    
    SET @dateChange =
    (
        SELECT date
            FROM
            (
                SELECT property, confirmationId, date, ROW_NUMBER() OVER(ORDER BY date) AS rowNumber
                    FROM dbo.tb_rguest_reservation_records
                        WHERE confirmationId = @confirmation
                        AND property = @property
            ) res
                WHERE rowNumber = @dateCounter
    )
    
    SET @jsonValue =REPLACE(@jsonValue, '"' + CAST(@dateCounter AS VARCHAR(12)) + '"', '"' + CAST(@dateChange AS VARCHAR(12)) + '"')
    
    SET @dateCounter = @dateCounter + 1
    
    END
    
    SELECT @jsonValue