Remove SQL-compatibility function cardinality(). It is not exactly clear

how this ought to behave for multi-dimensional arrays.  Per discussion,
not having it at all seems better than having it with what might prove
to be the wrong behavior.  We can always add it later when we have consensus
on the correct behavior.

2 files changed, 0 insertions, 30 deletions

diff --git a/src/test/regress/expected/arrays.out b/src/test/regress/expected/arrays.out
index ec2fd52c7f8..c7ddc2d7aa5 100644
--- a/src/test/regress/expected/arrays.out
+++ b/src/test/regress/expected/arrays.out
@@ -1105,26 +1105,6 @@ select array_length(array[[1,2,3], [4,5,6]], 3);
              
 (1 row)
 
-select cardinality(array[1,2,3]);
- cardinality 
--------------
-           3
-(1 row)
-
-select cardinality(array[[1,2,3], [4,5,6]]);
- cardinality 
--------------
-           2
-(1 row)
-
-select c, cardinality(c), d, cardinality(d) from arrtest;
-         c         | cardinality |       d       | cardinality 
--------------------+-------------+---------------+-------------
- {}                |             | {}            |            
- {foobar,new_word} |           2 | {{elt1,elt2}} |           1
- {foo,new_word}    |           2 | {bar,foo}     |           2
-(3 rows)
-
 select array_agg(unique1) from (select unique1 from tenk1 where unique1 < 15 order by unique1) ss;
               array_agg               
 --------------------------------------
@@ -1143,12 +1123,6 @@ select array_agg(nullif(ten, 4)) from (select ten from tenk1 where unique1 < 15
  {0,1,2,3,NULL,5,6,7,8,9,0,1,2,3,NULL}
 (1 row)
 
-select cardinality(array_agg(unique1)) from tenk1 where unique1 < 15;
- cardinality 
--------------
-          15
-(1 row)
-
 select array_agg(unique1) from tenk1 where unique1 < -15;
  array_agg 
 -----------
diff --git a/src/test/regress/sql/arrays.sql b/src/test/regress/sql/arrays.sql
index a4a91b034c9..5e4933c31d3 100644
--- a/src/test/regress/sql/arrays.sql
+++ b/src/test/regress/sql/arrays.sql
@@ -392,14 +392,10 @@ select array_length(array[[1,2,3], [4,5,6]], 0);
 select array_length(array[[1,2,3], [4,5,6]], 1);
 select array_length(array[[1,2,3], [4,5,6]], 2);
 select array_length(array[[1,2,3], [4,5,6]], 3);
-select cardinality(array[1,2,3]);
-select cardinality(array[[1,2,3], [4,5,6]]);
-select c, cardinality(c), d, cardinality(d) from arrtest;
 
 select array_agg(unique1) from (select unique1 from tenk1 where unique1 < 15 order by unique1) ss;
 select array_agg(ten) from (select ten from tenk1 where unique1 < 15 order by unique1) ss;
 select array_agg(nullif(ten, 4)) from (select ten from tenk1 where unique1 < 15 order by unique1) ss;
-select cardinality(array_agg(unique1)) from tenk1 where unique1 < 15;
 select array_agg(unique1) from tenk1 where unique1 < -15;
 
 select unnest(array[1,2,3]);