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CREATE TABLE tb_trades( ID VARCHAR(38) NOT NULL PRIMARY KEY ,Symbol VARCHAR(8) ,Price INTEGER ,Volume INTEGER ,Charges INTEGER ); INSERT INTO tb_trades(ID,Symbol,Price,Volume,Charges) VALUES ('1','BP',300,+100,15); INSERT INTO tb_trades(ID,Symbol,Price,Volume,Charges) VALUES ('2','BP',310,+100,15); INSERT INTO tb_trades(ID,Symbol,Price,Volume,Charges) VALUES ('3','TOT',250,+50,20); INSERT INTO tb_trades(ID,Symbol,Price,Volume,Charges) VALUES ('4','BP',340,-20,10);
select symbol, sum(case when volume > 0 then volume * price end) / sum(case when volume > 0 then volume end) as avg_price, sum(volume) as volume, sum(charges) as total_charges from tb_trades group by symbol
symbol
avg_price
volume
total_charges
BP
305.0000
180
40
TOT
250.0000
50
20