Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_203_112 ( id number, "choke" text, "constriction (inch)" number, "percentage of lead shot in 30-inch circle at 40 yards" text, "identification (notches)" number, "identification (stars)\n(spanish shotguns)" number )

### Question ###
which choke has the least constriction ?

### Accurate SQL ###

SELECT "choke" FROM table_203_112 ORDER BY "constriction (inch)" LIMIT 1