how to show only records having value >0 in sql ?

Subin Thomas

7y857SQL

i have a table in which there are number of fields some fields contain value while some contains 0 value like below table

abcd	xyz	pqr	abc	rst
23	0	5453	54645	0
45353	0	5456	5646	0
213	0	45	564	0
23	0	546	56	0

from above table all the fields having zero should not be visible

only 3 fiels should be visible that is abcd, pqr and abc

3 Replies

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Nirav Gandhi7y ago
Hello Subin,

use below dynamic query which will work for any table in database.you need to just pass table name in @TableName variable.it will return only for numeric columns.
DECLARE @TableName VARCHAR(100)= 'Customer', @ColumnName VARCHAR(200), @intCnt TINYINT= 1

DECLARE @TblColumName AS TABLE
(id         TINYINT IDENTITY(1, 1),
ColumnName VARCHAR(50)
)

DROP TABLE IF EXISTS #TotalColumns

CREATE TABLE #TotalColumns(ColumnName VARCHAR(50))
INSERT INTO @TblColumName
       SELECT C.name
       FROM sys.tables AS T
            INNER JOIN sys.columns AS C
            ON C.object_id = T.object_id
       WHERE T.name = @TableName

WHILE(@intCnt <=
(
    SELECT COUNT(*)
    FROM @TblColumName
))
    BEGIN
        SET @ColumnName = ''
        SELECT @ColumnName = ColumnName
        FROM @TblColumName
        WHERE Id = @intCnt

        EXEC ('
        Declare @TotalColumnName varchar(200)
        if((select Count('+@ColumnName+') from '+@TableName+'
        where ISNUMERIC('+@ColumnName+')=1 and '+@ColumnName+'>0))>0
        Begin
         insert into #TotalColumns select '''+@ColumnName+'''
        END')


        SET @intCnt+=1

    END

SELECT @ColumnName = STUFF(
(
    SELECT ','+'['+ColumnName+']'
    FROM #TotalColumns FOR XML PATH('')
), 1, 1, '')

IF(@ColumnName IS NOT NULL)
    EXEC ('select '+@ColumnName+' from '+@TableName+'');
0
7y ago
Hello, this is simple solution for ignoring specific columns.

create view view_name as
select abcd,pqr,abc
from table_name
0
Sanwar Ranwa7y ago
Hello Subin

check this query
CREATE TABLE  Ty1(a1 INT,x INT ,p INT,ab INT ,r INT )

INSERT INTO Ty1 VALUES( 23   ,0 , 5453,  54645,  0)
INSERT INTO Ty1 VALUES( 45353   , 0  ,5456   ,5646   ,0)
INSERT INTO Ty1 VALUES(  213     ,0  ,45,    564,    0)
INSERT INTO Ty1 VALUES(  23,     0,  546,    56 , 0)

  SELECT * FROM Ty1 t


  DECLARE @s VARCHAR(MAX)

set @s='select '+(CASE WHEN ((SELECT COUNT(*) FROM Ty1 t WHERE a1>0))>0 THEN 'a1,' ELSE '' END)
+(CASE WHEN ((SELECT COUNT(*) FROM Ty1 t WHERE x>0))>0 THEN 'x,' ELSE '' END)
  +(CASE WHEN ((SELECT COUNT(*) FROM Ty1 t WHERE ab>0))>0 THEN 'p,' ELSE '' END)
  +(CASE WHEN ((SELECT COUNT(*) FROM Ty1 t WHERE r>0))>0 THEN 'r' ELSE '' END)+
  +(CASE WHEN ((SELECT COUNT(*) FROM Ty1 t WHERE ab>0))>0 THEN 'ab' ELSE '' END)+

  '   from Ty1'

  print(@s)
      EXEC(@s)
0