Select Row number in postgres

Question

How to select row number in postgres.

I tried this:

select
    row_number() over (ORDER BY cgcode_odc_mapping_id)as rownum,
    cgcode_odc_mapping_id
  from access_odc.access_odc_mapping_tb
  order by cgcode_odc_mapping_id

and got this error:

ERROR: syntax error at or near "over"
LINE 1: select row_number() over (ORDER BY cgcode_odc_mapping_id)as

I have checked these pages : How to show row numbers in PostgreSQL query?

This is my query:

 select row_number() over (ORDER BY cgcode_odc_mapping_id)as rownum,cgcode_odc_mapping_id from access_odc.access_odc_mapping_tb order by cgcode_odc_mapping_id

this is the error:

ERROR: syntax error at or near "over" LINE 1: select row_number() over (ORDER BY cgcode_odc_mapping_id)as

Select Row number in postgres

1 Answers