| --! qt:dataset:src |
| DESCRIBE FUNCTION count; |
| DESCRIBE FUNCTION EXTENDED count; |
| |
| EXPLAIN SELECT count(key) FROM src; |
| SELECT count(key) FROM src; |
| |
| EXPLAIN SELECT count(DISTINCT key) FROM src; |
| SELECT count(DISTINCT key) FROM src; |
| |
| EXPLAIN SELECT count(DISTINCT key, value) FROM src; |
| SELECT count(DISTINCT key, value) FROM src; |
| |
| EXPLAIN SELECT count(*) FROM src; |
| SELECT count(*) FROM src; |
| |
| EXPLAIN SELECT count(1) FROM src; |
| SELECT count(1) FROM src; |
| |
| select count(1) from src where false; |
| select count(*) from src where false; |