select regexp_replace(regexp_replace(regexp_replace(t.column_001,' ',''),' 12',''),' 15' ,'') as column_001
,regexp_replace(regexp_replace(regexp_replace(t.column_002,' ',''),' 12',''),' 15' ,'') as column_002
,regexp_replace(regexp_replace(regexp_replace(t.column_003,' ',''),' 12',''),' 15' ,'') as column_003
,regexp_replace(regexp_replace(regexp_replace(t.column_004,' ',''),' 12',''),' 15' ,'') as column_004
,regexp_replace(regexp_replace(regexp_replace(t.column_005,' ',''),' 12',''),' 15' ,'') as column_005
,regexp_replace(regexp_replace(regexp_replace(t.column_006,' ',''),' 12',''),' 15' ,'') as column_006
,regexp_replace(regexp_replace(regexp_replace(t.column_007,' ',''),' 12',''),' 15' ,'') as column_007
from table_name t;