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Developer-C 11.1
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4.0
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WITH t(customer, product) AS ( SELECT 'A','a' FROM dual UNION ALL SELECT 'A','b' FROM dual UNION ALL SELECT 'A','c' FROM dual UNION ALL SELECT 'B','a' FROM dual UNION ALL SELECT 'B','c' FROM dual UNION ALL SELECT 'C','a' FROM dual ) SELECT customer, SUM(DECODE(product , 'a', 1, 0 )) AS product_a, SUM(DECODE(product , 'b', 1, 0 )) AS product_b, SUM(DECODE(product , 'c', 1, 0 )) AS product_c FROM t GROUP BY customer
CUSTOMER
PRODUCT_A
PRODUCT_B
PRODUCT_C
A
1
1
1
B
1
0
1
C
1
0
0