Dats table

Table Name: TRADES

DATE	FIRM	SYMBOL	SIDE	QUANTITY	PRICE
2/3/2014	1ABC	A123	B	200	41
2/4/2014	2BCD	B234	B	600	60
2/7/2014	1ABC	C345	S	600	70
2/10/2014	3CDE	C345	S	600	70
2/12/2014	4DEF	B234	B	200	62
2/14/2014	3CDE	B234	B	300	61
2/21/2014	1ABC	A123	B	300	40
2/24/2014	1ABC	A123	S	300	30
2/25/2014	4DEF	C345	B	2100	71
2/27/2014	CDE	B234	S	1100	63

Data Observation and Description:

Q2. Your business user asks you to tell them the unique symbols in the data table above. Please write the SQL query you would use to query this table. Please show the exact results you expect based on your SQL query

Symbol