在SQL中只获取字母数字行？

Question

I've column with data

CLARK
KING
MILLER
SMITH, $800 .00
JONES, $2975.00
SCOTT, $3000.00
ADAMS, $1100.00
FORD, $3000.00
ALLEN30  
WARD30  
MARTIN30  
BLAKE30  
TURNER30  
JAMES30  

I'want only alphanumeric rows means

SMITH, $800 .00
JONES, $2975.00
SCOTT, $3000.00
ADAMS, $1100.00
FORD, $3000.00

except this rows all rows should be included?

How can i get this?

Answer 1

You could use PATINDEX :

DECLARE @test table(col varchar(30));
INSERT INTO @test
   SELECT * FROM (SELECT 'CLARK' UNION ALL SELECT 'KING' UNION ALL SELECT 'MILLER' UNION ALL SELECT 'SMITH, $800 .00' UNION ALL SELECT 'JONES, $2975.00' UNION ALL SELECT 'SCOTT, $3000.00' UNION ALL SELECT 'ADAMS, $1100.00' UNION ALL SELECT 'FORD, $3000.00' UNION ALL SELECT 'ALLEN30' UNION ALL SELECT 'WARD30' UNION ALL SELECT 'MARTIN30' UNION ALL SELECT 'BLAKE30' UNION ALL SELECT 'TURNER30' UNION ALL SELECT 'JAMES30')AS T(Spalte)

Patindex returns the starting position of the first occurrence of a pattern in a specified expression. Since i've used a pattern that matches any non-alphanumeric ( ^ Wildcard - Character ), this returns only records which contain only alphanumeric characters (+ white-spaces):

SELECT col 
FROM   @test
WHERE  PATINDEX('%[^a-zA-Z0-9 ]%',col) = 0

Result:

CLARK
KING
MILLER
ALLEN30
WARD30
MARTIN30
BLAKE30
TURNER30
JAMES30

Answer 2

select * from your_table
where len((replace(your_col, '$', '')) != len(your_col)

Answer 3

Well, part of your problem is that the table design is poor - columns should be atomic and contain only one type of item. If the numeric were in a separate column (the correct design) you could use several techniques to return rows which had the numeric populated (eg WHERE NOT NULL, as a simple example).

In your case, assuming you don't want to change the table design, you could use a LIKE clause to find rows where the column contains '$'. This is hugely inefficient though, and I suggest it without endorsing it.

Answer 4

You can use a case statement similar to:

SELECT colname = CASE CaseName
    WHEN '%$%' THEN colname
    END
FROM tablename

Answer 5

I think table structure could be improved for speed, but given what we have...

Select * from [table]
where [column] like '%$%'

or did you want the rows without the '$'?

Select * from [table]
where [column] not like '%$%'

this is of course assuming that you only want the rows with the dollar sign.

If you were to have something like this:

[Name] [Dollars]
SMITH   800.00

Then you could query like so:

Select [Name], [Dollars]
From [table]
Where [Dollars] is not null

Answer 6

select col
from tab
where PATINDEX('%[^a-z0-9]%',col)=0