Unnest 2d array #116
Unnest 2d array #116
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Can one of the admins verify this patch? |
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| */ | ||
| CREATE OR REPLACE FUNCTION MADLIB_SCHEMA.array_unnest_2d_to_1d(x ANYARRAY, OUT unnest_2d_to_1d_id BIGINT, OUT unnest_2d_to_1d_result ANYARRAY) | ||
| RETURNS SETOF RECORD |
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Please try to have at most 80 chars in a line wherever possible, based on MADlib's coding convention.
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The "unnest_2d_to_1d_id" can be an INTEGER, we won't have indices bigger than that.
Also maybe call it just "id" or "row_id/row_num"?
| ) t2 | ||
| GROUP BY t2.r | ||
| $BODY$ | ||
| LANGUAGE sql IMMUTABLE; |
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Having online docs with usage/example for this function would be helpful. We can have something similar to what is present in .../incubator-madlib/methods/stemmer/src/pg_gp/porter_stemmer.sql_in
…ges to install-check; added online docs
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Jenkins, OK to test. |
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Array Operations: Add function to unnest 2-D arrays into rows of 1-D arrays
JIRA: MADLIB-1086
Function to unnest 2-D array by one level (i.e. into rows of 1-D arrays).
This is needed, for instance, in K-means, so that we can get one centroid per row for follow on operations.