Guides
Importing Excel Sheets
The option `FIELD_TYPE` defines how field types should be treated:  
* `STRING`: all fields should be loaded as strings (` VARCHAR` type)
* `AUTO`: field types should be auto-detected (default)  
For example, to treat the first row as a header and use auto-detection for types, run:  
```sql
SELECT *
FROM st_read(
'test_excel.xlsx',
layer = 'Sheet1',
open_options = ['HEADERS=FORCE', 'FIELD_TYPES=AUTO']
);
```  
To treat the fields as strings:  
```sql
SELECT *
FROM st_read(
'test_excel.xlsx',
layer = 'Sheet1',
open_options = ['FIELD_TYPES=STRING']
);
```