Monday, 13 January 2014

How to get the word counts in sql server

CREATE FUNCTION [dbo].[WordCount] ( @InputString VARCHAR(max) )
RETURNS INT AS
BEGIN
DECLARE @Index INT
DECLARE @Char CHAR(1)
DECLARE @PrevChar CHAR(1)
DECLARE @WordCount INT
SET @Index = 1
SET @WordCount = 0
WHILE @Index <=LEN(@InputString)
BEGIN
SET @Char = SUBSTRING(@InputString, @Index, 1)
SET @PrevChar = CASE WHEN @Index = 1 THEN ' '
ELSE SUBSTRING(@InputString, @Index - 1, 1)
END
IF @PrevChar = ' ' AND @Char != ' '
SET @WordCount = @WordCount + 1
SET @Index = @Index + 1
END
RETURN @WordCount
END