Run Queries on Data
Warning
SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.
On this page
You can start running queries once the data is loaded into your SingleStore database.
Query 1: Finds the most traded stocks
This query finds the most traded stocks.
USE trades;SELECT stock_symbol, COUNT(*) AS cFROM tradeGROUP BY stock_symbolORDER BY c DESC LIMIT 5;
+--------------+-------+
| stock_symbol | c |
+--------------+-------+
| TIG | 30401 |
| FB | 30300 |
| MNGA | 30300 |
| QCOM | 30199 |
| KHC | 30199 |
+--------------+-------+
5 rows in set (0.11 sec)
Query 2: Finds the most volatile stocks
This query finds the most volatile stocks which have the highest variance in prices.
USE trades;SELECT stock_symbol, VARIANCE(share_price) varFROM tradeGROUP BY stock_symbolORDER BY var DESCLIMIT 5; /* Remove LIMIT to see full result*/
+--------------+-------------+
| stock_symbol | var |
+--------------+-------------+
| IBKR | 32.24672973 |
| XRAY | 28.09745295 |
| ODFL | 25.18033964 |
| ALGN | 24.47217863 |
| VXUS | 24.11941421 |
+--------------+-------------+
5 rows in set (1.74 sec)
Query 3: Portfolio Aggregation
This is a portfolio aggregation query that uses Common Table Expression (CTE), JOIN, and window functions.
USE trades;WITH folio AS (SELECT id, stock_symbol, shares, share_price, trade_timeFROM trade),AggCalcs AS (SELECTstock_symbol AS ACsymb,MAX(share_price) AS pmax,MIN(share_price) AS pmin,STD(share_price) AS pstd,SUM(share_price*shares)/SUM(shares) AS avg_pps, ## Weighted AverageSUM(share_price*shares) AS total_pvalueFROM tradeGROUP BY 1)SELECTDISTINCT folio.stock_symbol,avg_pps,pmin,pmax,percentile_cont(.25) WITHIN group (ORDER BY share_price) OVER (PARTITION BY stock_symbol) AS Q1,percentile_cont(.5) WITHIN group (ORDER BY share_price) OVER (PARTITION BY stock_symbol) AS median,percentile_cont(.75) WITHIN group (ORDER BY share_price) OVER (PARTITION BY stock_symbol) AS Q3FROM folioJOIN AggCalcs ON (folio.stock_symbol = ACsymb)ORDER BY folio.stock_symbolLIMIT 5; /* Remove LIMIT to see full result*/
+--------------+-----------------+---------+---------+-------------+-------------+-------------+
| stock_symbol | avg_pps | pmin | pmax | Q1 | median | Q3 |
+--------------+-----------------+---------+---------+-------------+-------------+-------------+
| AABA | 90.104679207921 | 86.7900 | 93.5923 | 88.89430000 | 90.02250000 | 91.32900000 |
| AAL | 81.627300000000 | 78.1108 | 85.8548 | 79.65410000 | 80.57210000 | 84.51420000 |
| AAPL | 74.203350495050 | 71.3886 | 77.0869 | 73.46370000 | 74.15330000 | 75.05420000 |
| ABMD | 77.400400990099 | 70.7616 | 85.1131 | 73.57460000 | 76.65900000 | 80.89240000 |
| ACGL | 73.807070297030 | 70.4365 | 79.1696 | 72.21950000 | 73.09320000 | 75.56110000 |
+--------------+-----------------+---------+---------+-------------+-------------+-------------+
5 rows in set (3.78 sec)
Last modified: October 10, 2024