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1000 rows affected
id username
66 Number42
QUERY PLAN
Seq Scan on demo (cost=0.00..22.00 rows=5 width=40) (actual time=0.097..0.444 rows=1 loops=1)
  Filter: (upper(username) = 'NUMBER42'::text)
  Rows Removed by Filter: 999
Planning Time: 0.025 ms
Execution Time: 0.454 ms
QUERY PLAN
Seq Scan on demo (cost=0.00..22.01 rows=5 width=32) (actual time=0.033..0.351 rows=1 loops=1)
  Filter: (upper(username) = 'NUMBER42'::text)
  Rows Removed by Filter: 999
Planning Time: 0.024 ms
Execution Time: 0.361 ms
QUERY PLAN
Index Scan using demo_upper on demo (cost=0.28..20.38 rows=5 width=32) (actual time=0.043..0.045 rows=1 loops=1)
  Index Cond: (upper(username) = 'NUMBER42'::text)
Planning Time: 0.272 ms
Execution Time: 0.067 ms
QUERY PLAN
Index Only Scan using demo_upper_covering on demo (cost=0.28..4.38 rows=5 width=32) (actual time=0.044..0.046 rows=1 loops=1)
  Index Cond: ((upper(username)) = 'NUMBER42'::text)
  Heap Fetches: 0
Planning Time: 0.206 ms
Execution Time: 0.066 ms
QUERY PLAN
Index Only Scan using demo_upper_stored on demo (cost=0.28..4.36 rows=5 width=32) (actual time=0.046..0.047 rows=1 loops=1)
  Index Cond: (upper_username = 'NUMBER42'::text)
  Heap Fetches: 0
Planning Time: 0.123 ms
Execution Time: 0.066 ms