23. 測定したクエリ
Query1: select count(*) from TestTBL
Query2: select * from TestTBL where col1 = ‘XXX’
Query3: select * from TestTBL where col1 = ‘XXX’ and col2
= ‘YYY’
Query4: select col1, count(*) from TestTBL group by col1
Query5: select col1, count(*) from TestTBL where col2 =
‘YYY’ group by col1