Driver/ODBC: Add isql to page about applications

Author: amotl

docs/connect/application.md

@@ -106,6 +106,54 @@ crash --command "SELECT 42.42;"
 ::::
 
 
+(isql)=
+### isql
+
+`isql` and `iusql` are unixODBC command-line tools allowing users to execute
+SQL interactively or in batches.
+The tools provide several useful features, including an option to generate
+output wrapped in an HTML table.
+
+:::{include} /connect/odbc/setup-widget.md
+:::
+
+::::{tab-set}
+
+:::{tab-item} CrateDB Cloud
+:sync: server
+```{code} ini
+[CrateDB Cloud]
+Driver      = PostgreSQL ODBC
+Servername  = testcluster.cratedb.net
+Port        = 5432
+Sslmode     = require
+Username    = admin
+Password    = password
+```
+```shell
+echo "SELECT 42.42" | iusql "CrateDB Cloud"
+```
+:::
+
+:::{tab-item} CrateDB on localhost
+:sync: localhost
+```{code} ini
+[CrateDB]
+Driver      = PostgreSQL ODBC
+Servername  = localhost
+Port        = 5432
+Sslmode     = disable
+Username    = crate
+Password    = crate
+```
+```shell
+echo "SELECT 42.42" | iusql "CrateDB"
+```
+:::
+
+::::
+
+
 (psql)=
 ### psql
 

docs/connect/odbc/index.md

@@ -23,7 +23,7 @@ The application uses ODBC functions through an _ODBC driver manager_ and
 addresses the driver and database using a _Data Source Name (DSN)_.
 :::
 
-:::{include} setup-widget.md
+:::{include} /connect/odbc/setup-widget.md
 :::
 
 ## Examples

docs/connect/odbc/setup-widget.md

@@ -6,6 +6,6 @@ The PostgreSQL ODBC driver [psqlODBC]
 can be used to connect to CrateDB from ODBC environments.
 
 ::::{dropdown} Learn how to install and configure the PostgreSQL ODBC driver
-:::{include} setup-body.md
+:::{include} /connect/odbc/setup-body.md
 :::
 ::::