Обсуждение: SQL state 42601 FOR syntax error
Sir/Madam:
The code that follows iterates on a temporary table of distinct vehicle id’s that results from a query on the normal.joined_points_speeds_orderedID table. The normal.joined_points_speeds_orderedid table has vehicle_id, trip_id, local_ts, calc_miles_duration, calc_time_duration, and calc_speed fields and is ordered by vehicle_id. The purpose of this code is to break up a large table of point level vehicle data by vehicle_id (into several smaller tables stored as csv). I think the code that follows should do this by copying temporary tables into csv files, however it doesn’t. I get a FOR syntax error on the following code.
FOR rowNum IN SELECT DISTINCT ON (vehicle_id) vehicle_id FROM normal.joined_points_speeds_orderedID LOOP
EXECUTE ‘CREATE TEMP TABLE vehiclePointData_’||rowNum|| ‘AS SELECT * FROM normal.joined_points_speeds_orderedID WHERE joined_points_speeds_orderedID.vehicle_id=’||rowNum;
EXECUTE ‘COPY vehiclePointData_’||rowNum||’TO D:/PSRC_Public_access/calculations_points_speeds/’||rowNum||’.csv delimiters ‘||’,’||’ WITH CSV HEADER’;
END LOOP;
The Error reads—
ERROR: syntax error at or near “FOR”
LINE 1: FOR rowNum IN (SELECT DISTINCT ON (vehicle_id) vehicle_id …
********Error**********
ERROR: syntax error at or near “FOR”
SQL state: 42601
Character: 1
Can you spot the error in the included code?
Thank you.
Laurie Ramroth
"Ramroth, Laurie" <Laurie.Ramroth@nrel.gov> writes:
> I get a FOR syntax error on the following code.
> FOR rowNum IN SELECT DISTINCT ON (vehicle_id) vehicle_id FROM normal.joined_points_speeds_orderedID LOOP
> EXECUTE 'CREATE TEMP TABLE vehiclePointData_'||rowNum|| 'AS SELECT * FROM normal.joined_points_speeds_orderedID
WHEREjoined_points_speeds_orderedID.vehicle_id='||rowNum;
> EXECUTE 'COPY vehiclePointData_'||rowNum||'TO D:/PSRC_Public_access/calculations_points_speeds/'||rowNum||'.csv
delimiters'||','||' WITH CSV HEADER';
> END LOOP;
> The Error reads-
> ERROR: syntax error at or near "FOR"
> LINE 1: FOR rowNum IN (SELECT DISTINCT ON (vehicle_id) vehicle_id ...
You haven't provided us a lot of context, but I'm going to guess that
you are trying to execute this as just plain SQL. It's not SQL.
FOR is a construct in the plpgsql procedural language; so you need to
put this into a plpgsql function.
regards, tom lane