Need assistance with Dynamic SQL

  • Hello, I have the following code below that is throwing the following error:

    Msg 214, Level 16, State 3, Procedure sp_executesql, Line 1

    Procedure expects parameter '@params' of type 'ntext/nchar/nvarchar'.

    I have been looking at this too long and just need a second pair of eyes to help me fix the issue. I actually want this to be a stored procedure when finished and I will be passing in the declared parameters below. Any assistance is greatly appreciated.

    DECLARE

    @DBName NVARCHAR(25) = 'CRHC',

    @BegDate DATE = '9/1/2016',

    @EndDate DATE = '9/1/2016'

    EXECUTE sp_executesql

    N'USE @DBName; SELECT DISTINCT

    b.vendname AS [Vendor Name],

    c.APFRDCNM AS [Applied From Check Number],

    '' '' as [Applied To Invoice Number],

    CONVERT(VARCHAR(12), c.glpostdt, 101) AS [Post To GL Date],

    CASE WHEN c.doctype = 6 THEN ''VOUCHER'' END AS [Document Type],

    CASE WHEN c.APTODCTY = 1 THEN ''INVOICE'' END AS [Applied To Document Type],

    C.VCHRNMBR AS [Voucher Number],

    PMC.DOCAMNT AS DocumentAmount

    ,am.ACTNUMST AS GL_ACCOUNT

    ,GL.CRDTAMNT AS [Credit]

    ,GL.DEBITAMT AS [Debit]

    FROM

    PM30300 c INNER JOIN PM00200 b (NOLOCK) ON C.vendorid = b.vendorid

    INNER JOIN PM30200 PMC ON PMC.VCHRNMBR = C.VCHRNMBR and PMC.VENDORID = c.VENDORID

    LEFT JOIN GL20000 GL ON C.VCHRNMBR = GL.ORCTRNUM and C.vendorid = GL.ORMSTRID

    INNER JOIN GL00105 am ON GL.ACTINDX = am.ACTINDX

    WHERE

    c.applyfromglpostdate BETWEEN @BegDate AND @EndDate

    UNION

    SELECT DISTINCT

    b.vendname AS [Vendor Name],

    c.APFRDCNM AS [Applied From Check Number],

    ''_'' + c.APTODCNM AS [Applied To Invoice Number],

    CONVERT(VARCHAR(12), c.glpostdt, 101) AS [Post To GL Date],

    CASE WHEN c.doctype = 6 THEN ''VOUCHER'' END AS [Document Type],

    CASE WHEN c.APTODCTY = 1 THEN ''INVOICE'' END AS [Applied To Document Type],

    a.VCHRNMBR AS [Voucher Number],

    c.ActualApplyToAmount as DocumentAmount

    ,ama.ACTNUMST AS INV_ACCOUNT

    ,a.CRDTAMNT AS INVOICE_CREDIT

    ,a.DEBITAMT AS INVOICE_DEBIT

    FROM

    PM30600 a (NOLOCK) INNER JOIN PM00200 b (NOLOCK) ON a.vendorid = b.vendorid

    INNER JOIN PM30300 c (NOLOCK) ON a.vendorid = c.vendorid AND a.VCHRNMBR = c.APTVCHNM

    JOIN PM30200 PMI ON PMI.VCHRNMBR = c.APTVCHNM

    INNER JOIN GL00105 ama ON a.DSTINDX = ama.ACTINDX

    WHERE

    c.applyfromglpostdate BETWEEN @BegDate AND @EndDate

    ORDER BY

    [Vendor Name] ,

    [Applied From Check Number],

    [Applied To Invoice Number]'

    ,'@DBName NVARCHAR(25), @BegDate DATE, @EndDate DATE',

    @DBName = @DBName, @BegDate = @BegDate, @EndDate = @EndDate

    Thank you,

    David

  • As the error message suggests, try changing this line

    ,'@DBName NVARCHAR(25), @BegDate DATE, @EndDate DATE',

    to this

    ,N'@DBName NVARCHAR(25), @BegDate DATE, @EndDate DATE',

    If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.

  • Okay, that resolved that error, thank you. I am still getting the following error"

    Msg 102, Level 15, State 1, Line 1

    Incorrect syntax near '@DBName'.

    Thank you,

    David

  • oradbguru (11/10/2016)


    Okay, that resolved that error, thank you. I am still getting the following error"

    Msg 102, Level 15, State 1, Line 1

    Incorrect syntax near '@DBName'.

    Thank you,

    David

    OK, I think that the problem is that you cannot parameterise USE statements. This simple example backs this up:

    DECLARE @sql NVARCHAR(2000) = 'Use @DBName';

    DECLARE @params NVARCHAR(1000);

    DECLARE @DBName sysname = 'master';

    SET @params = N'@DBName sysname';

    EXEC sys.sp_executesql @sql, @params, @DBName;

    Which results in

    Msg 102, Level 15, State 1, Line 1

    Incorrect syntax near '@DBName'.

    If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.

  • That's disappointing.

  • Here's a safe option for you:

    DECLARE

    @DBName NVARCHAR(25) = 'CRHC',

    @BegDate DATE = '9/1/2016',

    @EndDate DATE = '9/1/2016',

    @SQL NVARCHAR(MAX)

    SELECT @SQL = N'USE ' + QUOTENAME( db.name) + ';

    SELECT DISTINCT

    b.vendname AS [Vendor Name],

    c.APFRDCNM AS [Applied From Check Number],

    '' '' as [Applied To Invoice Number],

    CONVERT(VARCHAR(12), c.glpostdt, 101) AS [Post To GL Date],

    CASE WHEN c.doctype = 6 THEN ''VOUCHER'' END AS [Document Type],

    CASE WHEN c.APTODCTY = 1 THEN ''INVOICE'' END AS [Applied To Document Type],

    C.VCHRNMBR AS [Voucher Number],

    PMC.DOCAMNT AS DocumentAmount

    ,am.ACTNUMST AS GL_ACCOUNT

    ,GL.CRDTAMNT AS [Credit]

    ,GL.DEBITAMT AS [Debit]

    FROM

    PM30300 c INNER JOIN PM00200 b (NOLOCK) ON C.vendorid = b.vendorid

    INNER JOIN PM30200 PMC ON PMC.VCHRNMBR = C.VCHRNMBR and PMC.VENDORID = c.VENDORID

    LEFT JOIN GL20000 GL ON C.VCHRNMBR = GL.ORCTRNUM and C.vendorid = GL.ORMSTRID

    INNER JOIN GL00105 am ON GL.ACTINDX = am.ACTINDX

    WHERE

    c.applyfromglpostdate BETWEEN @BegDate AND @EndDate

    UNION

    SELECT DISTINCT

    b.vendname AS [Vendor Name],

    c.APFRDCNM AS [Applied From Check Number],

    ''_'' + c.APTODCNM AS [Applied To Invoice Number],

    CONVERT(VARCHAR(12), c.glpostdt, 101) AS [Post To GL Date],

    CASE WHEN c.doctype = 6 THEN ''VOUCHER'' END AS [Document Type],

    CASE WHEN c.APTODCTY = 1 THEN ''INVOICE'' END AS [Applied To Document Type],

    a.VCHRNMBR AS [Voucher Number],

    c.ActualApplyToAmount as DocumentAmount

    ,ama.ACTNUMST AS INV_ACCOUNT

    ,a.CRDTAMNT AS INVOICE_CREDIT

    ,a.DEBITAMT AS INVOICE_DEBIT

    FROM

    PM30600 a (NOLOCK) INNER JOIN PM00200 b (NOLOCK) ON a.vendorid = b.vendorid

    INNER JOIN PM30300 c (NOLOCK) ON a.vendorid = c.vendorid AND a.VCHRNMBR = c.APTVCHNM

    JOIN PM30200 PMI ON PMI.VCHRNMBR = c.APTVCHNM

    INNER JOIN GL00105 ama ON a.DSTINDX = ama.ACTINDX

    WHERE

    c.applyfromglpostdate BETWEEN @BegDate AND @EndDate

    ORDER BY

    [Vendor Name] ,

    [Applied From Check Number],

    [Applied To Invoice Number];'

    FROM sys.databases db

    WHERE db.name = @DBName;

    EXECUTE sp_executesql

    @SQL, N'@DBName NVARCHAR(25), @BegDate DATE, @EndDate DATE',

    @DBName = @DBName, @BegDate = @BegDate, @EndDate = @EndDate;

    It prevents SQL Injection and validates the database name. It's a double protection, but might be worth it.

    Luis C.
    General Disclaimer:
    Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?

    How to post data/code on a forum to get the best help: Option 1 / Option 2
  • That's clever, Luis 🙂

    If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.

  • That works. Brilliant Luis!

    Thank you,

    David

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