Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
Description
The path function in utilities is supposed to accept expressions for the partition_expr parameter, but there are two aspects of the partition expression that are not handled currently:
1) If there are more than one condition in the partition expression, path() fails to run successfully. For instance, consider the input table present in the install check file for path, the following function call results in an error:
SELECT madlib.path('"Weblog"', '"Path_output"', 'user_id, age_group > 1, income_group > 1', 'event_timestamp ASC', 'I:="Click_event"=0 AND purchase_event=0, Click:="Click_event"=1 AND purchase_event=0, Conv:=purchase_event=1', 'I(click){1}(CONV){1}', 'COUNT(*)', TRUE); ERROR: spiexceptions.DuplicateColumn: column "?column?" specified more than once CONTEXT: Traceback (most recent call last): PL/Python function "path", line 23, in <module> return path.path(**globals()) PL/Python function "path", line 276, in path PL/Python function "path"
2) We cannot rename a particular condition/column name in the partition expression using "AS". For example, we get the following error with the function call shown below:
SELECT madlib.path('"Weblog"', '"Path_output"', 'user_id AS uid, 'event_timestamp ASC', 'I:="Click_event"=0 AND purchase_event=0, Click:="Click_event"=1 AND purchase_event=0, Conv:=purchase_event=1', 'I(click){1}(CONV){1}', 'COUNT(*)', TRUE); ERROR: spiexceptions.SyntaxError: syntax error at or near "AS" QUERY: � CONTEXT: Traceback (most recent call last): PL/Python function "path", line 23, in <module> return path.path(**globals()) PL/Python function "path", line 114, in path PL/Python function "path"
