其他
给usql添加DuckDB支持
Why DuckDB系列：
usql
$usqlType "help" for help.
(not connected)=> \driversAvailable Drivers: cockroachdb (postgres) [cr, cdb, crdb, cockroach] memsql (mysql) [me] mssql [ms, sqlserver] mysql [my, maria, aurora, mariadb, percona] postgres [pg, pgsql, postgresql] redshift (postgres) [rs] sqlite3 [sq, file, sqlite] tidb (mysql) [ti] vitess (mysql) [vt](not connected)=>
usql[1]是一款通用的支持多种数据库的命令行客户端（类似于图形版的数据库客户端，如DBeaver），使用Go语言开发，支持30多种数据库，
| Database (scheme/driver) | Protocol Aliases [real driver] |
|---|---|
| Microsoft SQL Server (mssql) | ms, sqlserver |
| MySQL (mysql) | my, mariadb, maria, percona, aurora |
| Oracle Database (godror) | or, oracle, oci8, oci, odpi, odpi-c |
| PostgreSQL (postgres) | pg, postgresql, pgsql |
| SQLite3 (sqlite3) | sq, sqlite, file |
| Amazon Redshift (redshift) | rs [postgres] |
| CockroachDB (cockroachdb) | cr, cockroach, crdb, cdb [postgres] |
| MemSQL (memsql) | me [mysql] |
| TiDB (tidb) | ti [mysql] |
| Vitess (vitess) | vt [mysql] |
| Google Spanner (spanner) | gs, google, span (not yet public) |
| MySQL (mymysql) | zm, mymy |
| PostgreSQL (pgx) | px |
| Apache Avatica (avatica) | av, phoenix |
| Apache Ignite (ignite) | ig, gridgain |
| Cassandra (cql) | ca, cassandra, datastax, scy, scylla |
| ClickHouse (clickhouse) | ch |
| Couchbase (n1ql) | n1, couchbase |
| Cznic QL (ql) | ql, cznic, cznicql |
| Firebird SQL (firebirdsql) | fb, firebird |
| Microsoft ADODB (adodb) | ad, ado |
| ModernC SQLite (moderncsqlite) | mq, modernsqlite |
| ODBC (odbc) | od |
| OLE ODBC (oleodbc) | oo, ole, oleodbc [adodb] |
| Presto (presto) | pr, prestodb, prestos, prs, prestodbs |
| SAP ASE (tds) | ax, ase, sapase |
| SAP HANA (hdb) | sa, saphana, sap, hana |
| Snowflake (snowflake) | sf |
| Vertica (vertica) | ve |
| VoltDB (voltdb) | vo, volt, vdb |
多种常见数据库只需要一个免安装程序，非常方便使用。
usql添加DuckDB的支持
为了给usql添加DuckDB的支持，需要用到以下库，
go-duckdb[2] database/sql的DuckDB数据库引擎实现
alitrack/duckdb[3] libduckdb_static.a 添加parquet_extension支持
xo/usql[4] 添加DuckDB支持代码
xo/dburl[5] 添加DuckDB dburl(我只是做尝试，所以暂时省略了这一步）
代码继续完善中， 有兴趣的可以看看，https://github.com/alitrack/usql
链接
[1] https://github.com/xo/usql
[2] https://github.com/marcboeker/go-duckdb
[3] https://github.com/alitrack/duckdb
[4] https://github.com/alitrack/usql
[5] https://github.com/xo/dburl