when to use pivot tables code example

Example 1: pivot table sql

SELECT SalesAgent AS PivotSalesAgent, India, US, UK FROM tblAgentsSales
PIVOT 
(
	SUM(SalesAmount) FOR SalesCountry IN (India, US, UK)
)
AS testPivotTable


SELECT SalesAgent GrpBySalesAgent, SalesCountry, SUM(SalesAmount) Sales 
from tblAgentsSales 
GROUP BY SalesAgent, SalesCountry


select SalesAgent TableSalesAgent, SalesCountry, SalesAmount 
from tblAgentsSales

Example 2: pivot table

SELECT *        -- Total invoices per gender
FROM (
    SELECT invoice, gender
    FROM sales
) d
PIVOT (
    sum(invoice)
    FOR gender IN ('F' AS "Women", 'M' AS "Men")
);
-- Table Sales:
CREATE TABLE sales (
    gender VARCHAR2(1 BYTE),		-- 'F' or 'M'
    invoice NUMBER
);

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Python Example

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