आप या तो COUNT फ़ंक्शन के अंदर CASE या DECODE कथन का उपयोग कर सकते हैं।
SELECT item_category,
COUNT (*) total,
COUNT (DECODE (item_status, 'serviceable', 1)) AS serviceable,
COUNT (DECODE (item_status, 'under_repair', 1)) AS under_repair,
COUNT (DECODE (item_status, 'condemned', 1)) AS condemned
FROM mytable
GROUP BY item_category;
आउटपुट:
ITEM_CATEGORY TOTAL SERVICEABLE UNDER_REPAIR CONDEMNED
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chair 5 1 2 2
table 5 3 1 1