Good afternnon, thanks for your idea, but its a little bit confusing for me this expression:

i know the characret + is used to concatenate but the expression 'exec sp_spaceused '''

itself what does mean?, when should i use simple quotes or doble quotes, and the construction of this instruction gets me a syntax error,

when using double quotes:

"select 'exec sp_spaceused ''' + name + '' from sysobjects where type = 'U' and name like 'paso_hechos%'"

error: Could not find stored procedure 'select 'exec sp_spaceused ''' + name + '' from sysobjects where type = 'U' and name like 'paso_hechos%''.

without double quotes:

select 'exec sp_spaceused ''' + name + '' from sysobjects where type = 'U' and name like 'paso_hechos%'

output:

exec sp_spaceused 'PASO_HECHOS_TRAFICO_ABONADO

exec sp_spaceused 'PASO_HECHOS_TRAFICO_LLAMADAS

exec sp_spaceused 'PASO_HECHOS_TRAFICO_LLAMADAS_CDRS_TARJETA

exec sp_spaceused 'PASO_HECHOS_TRAFICO_LLAMADAS_ENTRANTE_ELITE

what is wrong with the above sentences?

id appreciate again your help