将参数传递到psql命令时出错

Question

I'm trying to connect to a Redshift cluster and run a SQL script with parameters, but am getting errors.

Here's the Bash command:

psql -v schema="$REDSHIFT_SCHEMA" -h "$REDSHIFT_HOSTNAME" -d "$REDSHIFT_DATABASE" -U "$REDSHIFT_USERNAME" -p "$REDSHIFT_PORT" -f "nulltest.sql" -v inputStartDateId=20170318 -v inputEndDateId=20170404

And the contents of nulltest.sql is:

select 
    COALESCE( $inputStartDateId, min(StartDateID)),
    COALESCE( $inputEndDateId, max(EndDateID))
from (
    select 
        row_number()over(order by FiscalWeekID desc) as rownum,
        FiscalWeekID,
        min(dateid)StartDateID
        ,max(dateid)EndDateID 
    from 
        dm.dim_Time
    where DateKey < getdate()
    group by FiscalWeekID
    ) a
where rownum <= 3

The error I'm getting is:

psql:nulltest.sql:15: ERROR:  syntax error at or near "$"
LINE 2:  COALESCE( $inputStartDateId, max(StartDateID))

Am I calling the parameter incorrectly in the SQL script? The SQL runs perfectly fine through Aginity when I pass values into the parameter at run time. I'm not sure what's supposed to be different when calling the SQL through the psql command though

Answer 1

You're passing your parameters correctly on the command line, but your nulltest.sql file should use :inputStartDateId or :'inputStartDateId' instead of $inputStartDateId . Previous answer: https://stackoverflow.com/a/30850125/6650678 .