Remove two unnecessary operations.
<pre>
[[local]:5432] matt@~ =# EXPLAIN ANALYZE SELECT 'x' <> 'x' FROM generate_series(1,100000);
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------
Function Scan on generate_series (cost=0.00..10.00 rows=1000 width=0) (actual time=22.346..45.794 rows=100000 loops=1)
Planning time: 0.042 ms
Execution time: 59.130 ms
(3 rows)
Time: 59.744 ms
[[local]:5432] matt@~ =# EXPLAIN ANALYZE SELECT 'x' <> 'y' FROM generate_series(1,100000);
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------
Function Scan on generate_series (cost=0.00..10.00 rows=1000 width=0) (actual time=21.784..45.676 rows=100000 loops=1)
Planning time: 0.043 ms
Execution time: 59.294 ms
(3 rows)
Time: 59.663 ms
</pre>
Revert "Use to_json rather than concatenating strings in where clause"
This reverts commit
263aa2ca57f58c294adb05ba51649dd7c6edc14f.