Support pgvector operators in PostgreSQL

Fixes #807

Author: nene

src/languages/postgresql/postgresql.formatter.ts

@@ -367,6 +367,13 @@ export const postgresql: DialectOptions = {
       // Type cast
       '::',
       ':',
+      // Custom operators defined by pgvector extension
+      // https://github.com/pgvector/pgvector#querying
+      '<#>',
+      '<=>',
+      '<+>',
+      '<~>',
+      '<%>',
     ],
     operatorKeyword: true,
   },

test/postgresql.test.ts

@@ -146,6 +146,12 @@ describe('PostgreSqlFormatter', () => {
       '<->>',
       '<<<->',
       '<->>>',
+      // Custom operators: from pgvector extension
+      '<#>',
+      '<=>',
+      '<+>',
+      '<~>',
+      '<%>',
     ],
     { any: true }
   );