why DISTINCT it is not working

Por que no funciona el distinct
SELECT DISTINCT G.IDGERENCIA, GS.AREA
  FROM TA_GASTOS_STAGE GS
       INNER JOIN TA_GERENCIA G ON GS.GERENCIA_DIRECCIÓN = G.NOMBREGERENCIA
WHERE
       GS.AREA LIKE '%Mantenimiento Palmas%'  
ORDER BY G.IDGERENCIA,GS.AREA

         IDGERENCIA      AREA
1      11      Mantenimiento Palmas
2      11      Mantenimiento Palmas

this is the table_stage
SELECT *
  FROM TA_GASTOS_STAGE GS
WHERE
       GS.AREA LIKE '%Mantenimiento Palmas%'  
         TIPO      CECO      DESCRIPCION_CECO      F4      GERENCIA_DIRECCIÓN      AREA      PLANTA      RESPONSABLE      F9      F10      F11      F12      F13      F14      F15      F16
1      Producción      10P30803      Soplado Palmas Supervisión Mantenimiento            Gerencia Producción Soplado      Mantenimiento Palmas       Palmas                                                      
2      Producción      10P30804      Soplado Palmas  Mantenimiento            Gerencia Producción Soplado      Mantenimiento Palmas      Palmas
enrique_aeoAsked:
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sdstuberCommented:
you probably have white space in the columns you can't see
0
sdstuberCommented:
try this to see if you have extra invisible white space


SELECT DISTINCT G.IDGERENCIA, GS.AREA, length(gs.area)
  FROM TA_GASTOS_STAGE GS
       INNER JOIN TA_GERENCIA G ON GS.GERENCIA_DIRECCIÓN = G.NOMBREGERENCIA
WHERE
       GS.AREA LIKE '%Mantenimiento Palmas%'  
ORDER BY G.IDGERENCIA,GS.AREA
0
enrique_aeoAuthor Commented:
i agree

1      11      Mantenimiento Palmas      20
2      11      Mantenimiento Palmas       21

As I can do an UPDATE to remove blanks?
0
sdstuberCommented:
try this...


update  TA_GASTOS_STAGE set area = trim(area)

or, to only remove trailing blanks

update  TA_GASTOS_STAGE set area = rtrim(area)
0

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