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How do you search with date value

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  • How do you search with date value

    Hi all,

    I have 3 tables, PriceBook, PriceGroup and PriceDiscount tables.
    In the PriceDiscount table, I stored the discount rate with date and Product_id. I made One (priceGroup) to many (priceBook) set. I want to read the "Discount_rate" field with the date range from my set table and store here. I used the Query.filter method but my script kept reading only first record.

    PriceDiscount table has
    "SeriesVendor, StartDate, EndDate, Discount_rate"
    LT253V003 1/1/07 12/31/07 20%
    LT253V003 1/1/08 12/31/08 25%
    LT253V003 1/1/09 12/31/09 30%

    PriceGroup table has
    "PriceGroup_id, Vendor_id, SeriesVendor"
    LT253a V003 LT253V003
    LT253a V001 LT253V001

    PriceBook table has
    "PriceBook_id, priceGroup_id, BookPrice, StartDate, NetPrice
    abcdef LT253A 5.00 1/1/07 4.00 *apply(Discount_rate)

    Here, my filter scripts and I wrote in the Onsave FieldRule

    Code:
    dim tPrcPbk as p
    dim Shared vPbkVndrId as c
    dim shared vPbkSdate as d
    
        tPrcPbk= table.open("pricebks")
        vPbkVndrId= tPrcPbk.Prdctvndr_id
        vPbkSdate = tPrcPbk.Pbk_start_date
    
    dim tPrdVndr as p
        tPrdVndr = table.open("prdctvndrs")
    	query.filter = "Prdctvndr_id = Var->vPriceVndrId" 
    	query.order = ""
    	query.flags = ""
    tPrdVndr.fetch_first()
    
    DIM Shared vSeriesvndrId AS C
    vSeriesvndrId = tPrdVndr.eval("Seriesvndr_Id")
    
    dim tPrcDis as p
    dim shared vDisSdate as d
    dim shared vDisEdate as d
    
    	tPrcDis = table.open("pricediscount")
            query.filter = "(Seriesvndr_id = Var->vGet_Seriesvndr_Id) .and. between(vPbkSdate,{"+dtoc(tPrcDis.Startdate)+"},{"+dtoc(tPrcDis.Enddate)+"})"
    	query.order = ""
    	query.flags = ""
    tPrcDis.fetch_first()
        DIM Shared vDiscRate AS N
    	vDiscRate = tPrcDis.eval("Discount_Rate")
    
    'Write to table
    	tPrcPbk.change_begin()
    		tPrcpbk.Discount_rate = vDiscRate
    	tPrcPbk.change_end(.t.)
    tPrdVndr.close()
    tPrcDis.close()
    tPrcPbk.close()
    Why did I get only one first record which was wrong date?
    Is my "Query.filter = ... between( date range)" wrong?

  • #2
    Re: How do you search with date value

    Your filter will not work, instead try:

    query.filter = "(Seriesvndr_id = Var->vGet_Seriesvndr_Id) .and. between(vPbkSdate,tPrcDis.Startdate,tPrcDis.Enddate)"

    Comment


    • #3
      Re: How do you search with date value

      I would use

      query.filter = "Seriesvndr_id = "+quote(Var->vGet_Seriesvndr_Id)+" .and. between(vPbkSdate,{"+dtoc(tPrcDis.Startdate)+"},{"+dtoc(tPrcDis.Enddate)+"})"
      There can be only one.

      Comment


      • #4
        Re: How do you search with date value

        Hi, Gary and Stan

        Thank your for help

        I think I found the error on my coding. My filter script("between()") did not read and compared as I wished from PriceDiscount table. The Lower and Higher value stays only first record of the PriceDiscount. It did not search to next value date.

        Do I need the Loop script?
        What is the problem on my filter script?

        Comment


        • #5
          Re: How do you search with date value

          Oops - not sure what I was thinking :o, my filter was never going to work. I must try to concentrate...

          Comment


          • #6
            Re: How do you search with date value

            Hello All,

            I used the Calculate FieldRule and I wrote as
            LOOKUP("pricediscount","seriesvndr_id="+QUOTE(LOOKUP("prdctvndrs","PRDCTVNDR_ID="PRDCTVNDR_ID,"Seriesvndr_Id"))+"
            .and. (Pricebks->Pbk_Start_Date>=startdate)
            .and. (Pricebks->Pbk_Start_Date <= enddate)","Discount_rate")
            then I can get the right result. However, I still would like a better understanding of the basic xBasic.

            Could someone answer the questions below?
            I am on the Code Editor and use the typical One to many set table.

            (1) Does it refer to current child table record?
            Code:
            dim tPrcPbk as p
            dim Shared vPbkVndrId as c
            dim shared vPbkSdate as d
                tPrcPbk= table.open("pricebks")
                vPbkVndrId= tPrcPbk.Prdctvndr_id
                vPbkSdate = tPrcPbk.Pbk_start_date
            (2) How do you find a field value from parent table using current child table?

            Code:
            dim tPrdVndr as p
                tPrdVndr = table.open("prdctvndrs")
                query.filter = "Prdctvndr_id = Var->vPriceVndrId" 
                query.order = ""
                query.flags = ""
            (3) In order to complete the above "Query.filter" script, Do I need to "Fetch_first() and <tbl>.query_create()"?
            Code:
            tPrdVndr.fetch_first()
            Dim qPrdvndr as P
            qPrdVndr = tPrdVndr.query_create()
            (4) I want to find a field value from Parent table and store Variable. Is it right?.
            Code:
            DIM Shared vSeriesvndrId AS C
            vSeriesvndrId = tPrdVndr.eval("Seriesvndr_Id")
            (5) Now, I need to find a field value from 3rd table which is not combined with current set table and using the above Variable value.
            Code:
            dim tPrcDis as p '3rd table
            tPrcDis = table.open("pricediscount")
            query.filter = "(Seriesvndr_id = Var->vGet_Seriesvndr_Id) .and. "[DATE RANGE SCRIPTS HERE WHICH I HAVE A PROBLEM]
            query.order = ""
            query.flags = ""
            (6) Do I need the "Query_create(), Fetching and Looping(While...endwhile) in order to search the 3rd table here?
            Should I put the looping scripts before the "Query_filter()"?
            Code:
            <pointer>.Query_create()
            <Variable>.records_get()
            <tbl>.fetch_first()
            While .not. <tbl>.fetch_eof()
            <Variable>.records_get()
            If <variable> >0 then 'Get the Field value
                DIM Shared vDiscRate AS N
                vDiscRate = tPrcDis.eval("Discount_Rate")
            else
               Ui_msg_box("my message here")
            end if
            
            'Write to table
            	tPrcPbk.change_begin()
            		tPrcpbk.Discount_rate = vDiscRate
            	tPrcPbk.change_end(.t.)
            end while
            
            tPrdVndr.close()
            tPrcDis.close()
            tPrcPbk.close()

            Comment

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