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(diff config)(diff config src tgt)Given a config map, returns the difference between src (source) and tgt (target) data sets, including:
- :ins - Rows from src missing in tgt.
- :del - Rows from tgt missing in src.
- :upd - Rows in both src and tgt but with different values in pondered columns (see below).
Entries of the config map:
- :match-by - A non-empty collection of columns which [REQUIRED] are used to group src and tgt rows and pair those groups for comparison.
- :ponders - A map of column to number (ponder / weight). [OPTIONAL] Rows are compared only on these columns. Ponders are used to resolve cases with one-to-many, many-to-one or many-to-many rows in (match-by) groups for comparison. Rows are paired based on the sum of ponders of all of their differing columns. Pairs with the smallest sum are chosen and listed as :upd. Unpaired rows from src / tgt are listed as :ins / :del respectively.
Returns a transducer for the 1-parameter arity.
Given a config map, returns the difference between
src (source) and tgt (target) data sets, including:
* :ins - Rows from src missing in tgt.
* :del - Rows from tgt missing in src.
* :upd - Rows in both src and tgt but with different
values in pondered columns (see below).
Entries of the config map:
* :match-by - A non-empty collection of columns which
[REQUIRED] are used to group src and tgt rows and
pair those groups for comparison.
* :ponders - A map of column to number (ponder / weight).
[OPTIONAL] Rows are compared only on these columns.
Ponders are used to resolve cases with
one-to-many, many-to-one or many-to-many
rows in (match-by) groups for comparison.
Rows are paired based on the sum of ponders
of all of their differing columns.
Pairs with the smallest sum are chosen and
listed as :upd. Unpaired rows from src / tgt
are listed as :ins / :del respectively.
Returns a transducer for the 1-parameter arity.cljdoc is a website building & hosting documentation for Clojure/Script libraries
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