Support underscores in Trino numeric literals

Trino accepts underscores as digit separators, for example 1_000_000,
but the Trino dialect rejected them with a parse error.

Assisted-by: Claude Code Opus 5.5 <noreply@anthropic.com>

Author: mosabua

src/languages/trino/trino.formatter.ts

@@ -155,6 +155,8 @@ export const trino: DialectOptions = {
     // https://trino.io/docs/current/language/reserved.html
     identTypes: ['""-qq'],
     paramTypes: { positional: true },
+    // https://trino.io/docs/current/language/types.html#integer
+    underscoresInNumbers: true,
     operators: [
       '%',
       '->',

test/trino.test.ts

@@ -33,7 +33,7 @@ describe('TrinoFormatter', () => {
   const format: FormatFn = (query, cfg = {}) => originalFormat(query, { ...cfg, language });
 
   behavesLikeSqlFormatter(format);
-  supportsNumbers(format);
+  supportsNumbers(format, { underscore: true });
   supportsComments(format);
   supportsCommentOn(format);
   supportsCreateView(format, { orReplace: true, materialized: true });