What word is missing from the following SQL statement?
__________ count(*) from tablename;
(Please specify the missing word using lower-case letters only.)
Answer: select
題解
SELECT敘述的基本用法如下:
SELECT * from tablename
如果要指定查詢的欄位及順序,可以寫成:
SELECT column1, column2, column3, ... from tablename
如果要計算查詢的結果列數,可以寫成:
SELECT count(*) from tablename
SQL的關鍵字沒有區分大小寫,所以「SELECT」也可以寫成「select」。