> > how can i have the same in pg10 as i have had in pg 9.x? > > Move the function call to the FROM clause: > > select g, (g - 1) % 5 + 1 from generate_series(1, 10) g; thank you. That is exact what i need. > > I need it to date type to... if possible. > > There is a generate_series() variant that can return dates (more > precisely, timestamp with time zone). But what exactly would you like > returned? In the past i use querys like this to generate some timestamp field: select generate_series (1, 10), generate_series('2018-01-01 10:00'::timestamp, '2018-01-02 10:00'::timestamp, '10 hours'); in some case I need to order the timestamp data field and in others I just need an interval. So, in some moments an random data already help me and in others it is necessary to have both fields aligned. thanks