[GitHub] [madlib] njayaram2 commented on a change in pull request #401: DL: fix default_buffer_size calculation

[GitBox <gi...@apache.org>]

njayaram2 commented on a change in pull request #401: DL: fix default_buffer_size calculation
URL: https://github.com/apache/madlib/pull/401#discussion_r289493666
 
 

 ##########
 File path: src/ports/postgres/modules/internal/db_utils.py_in
 ##########
 @@ -93,3 +92,28 @@ def is_col_1d_array(source_table, col_name):
     """.format(col_name, source_table)
     result = plpy.execute(query)
     return result[0]["n_y"]
+
+# ------------------------------------------------------------------------------
+# This function runs postgres array_ndims function to get
+# the dimension of an array. For example if it is a 3
+# dimension array it will be an array with 3 elements
+# like [32,32,3].
+def get_ndims(source_table, col_name):
+    array_ndims = plpy.execute("SELECT array_ndims({0}) AS ndims FROM {1}".
 
 Review comment:
   Yes, that's right. Will do `plpy.execute(query_str, 1)`.

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