[文本处理] dsq：用于针对JSON，CSV，Excel，Parquet等运行SQL查询的命令行工具

type testdata.parquet | dsq -s parquet "SELECT COUNT(1) FROM {}"
+----------+
| count(*) |
+----------+
|     1000 |
+----------+
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cat testdata.csv | dsq -s csv "SELECT * FROM {} LIMIT 1"
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dsq testdata/join/users.csv testdata/join/ages.json "select {0}.name, {1}.age from {0} join {1} on {0}.id = {1}.id"
[{"age":88,"name":"Ted"},
{"age":56,"name":"Marjory"},
{"age":33,"name":"Micah"}]
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dsq --pretty api-results.json 'SELECT * FROM {0, "data.data"} ORDER BY id DESC'
+----+-------+
| id | name  |
+----+-------+
|  3 | Minh  |
|  1 | Corah |
+----+-------+
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