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I am getting the error
Error converting datatype nvarchar to int
Code:
ALTER procedure [dbo].[sp_rcdoc]
@regno int,
@appname varchar(50),
@DOI datetime,
@COV varchar(50),
@validtill date,
@imgloc varchar(500),
@ImagNo char(20),
@Purposecode varchar(50),
@FLAG varchar(3)
AS BEGIN
IF NOT EXISTS(SELECT regno FROM tblRCDocuments WHERE regno = @regno)
BEGIN
INSERT INTO tblRCDocuments(regno, appname, DOI, COV, validtill, imgloc, ImagNo, Purposecode, FLAG)
VALUES(@regno, @appname, @DOI, @COV, @validtill, @imgloc, @ImagNo, @Purposecode, @FLAG)
END
415
The error message tells you, the one column in one subsequent query is of type NVARCHAR, which cannot be converted implicitly.
1 Answer. "CONVERT" considers the column name, not the string that has the column name; your current expression is attempting to convert the string A. my_NvarcharColumn to an integer instead of the column content. SELECT convert (int, N'A.
Syntax: SELECT CONVERT(<DATA_TYPE>, <VALUE>); --DATA_TYPE is the type we want to convert to. --VALUE is the value we want to convert into DATA_TYPE. Example: SELECT 'Weight of Yogesh Vaishnav is ' + CONVERT(NVARCHAR(20), weight) AS person_weight FROM person WHERE name = 'Yogesh Vaishnav';
To convert a varchar type to a numeric type, change the target type as numeric or BIGNUMERIC as shown in the example below: SELECT CAST('344' AS NUMERIC) AS NUMERIC; SELECT CAST('344' AS BIGNUMERIC) AS big_numeric; The queries above should return the specified value converted to numeric and big numeric.
Looks like regno is a nvarchar data type in your table and you have passed an int via your your procedure, either use a cast and convert @regno to an nvarchar or change the regno data type to an integer in the table.
DECLARE @regnocast NVARCHAR(15)
SET @regnocast = CAST(@regno AS NVARCHAR)
Then in your SELECT, INSERT and WHERE clauses use @regnocast rather than @regno
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