orhankislal commented on a change in pull request #483: Graph: Fix column type
and output table schema bugs
URL: https://github.com/apache/madlib/pull/483#discussion_r387258557
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File path: src/ports/postgres/modules/graph/wcc.py_in
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@@ -294,7 +294,7 @@ def wcc(schema_madlib, vertex_table, vertex_id,
edge_table, edge_args,
if not is_platform_pg():
# Drop intermediate table created for Greenplum
plpy.execute("DROP TABLE IF EXISTS {0}".format(edge_inverse))
- plpy.execute("ALTER TABLE {0} RENAME TO {1}".format(newupdate, out_table))
+ plpy.execute("CREATE TABLE {0} AS SELECT * FROM {1}".format(out_table,
newupdate))
Review comment:
`newupdate` is dropped at the end of the function(line 316-317). We need
this change because postgresql doesn't allow altering the schema of a table via
rename. If the user wants the output table in a specific schema, alter table
line will fail.
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