feat(dependency): Support pg version 7 (#7888)

docs/usage.md

@@ -201,7 +201,7 @@ const sequelize = new Sequelize('sqlite:relativePath/dbname.db')
 
 ### PostgreSQL
 
-The library for PostgreSQL is`pg@~3.6.0` You'll just need to define the dialect:
+The library for PostgreSQL is`pg@^5.0.0 || ^6.0.0 || ^7.0.0` You'll just need to define the dialect:
 
 ```js
 const sequelize = new Sequelize('database', 'username', 'password', {

lib/dialects/postgres/connection-manager.js

@@ -153,25 +153,22 @@ class ConnectionManager extends AbstractConnectionManager {
         query += 'SELECT typname, oid, typarray FROM pg_type WHERE typtype = \'b\' AND typname IN (\'hstore\', \'geometry\', \'geography\')';
       }
 
-      return new Promise((resolve, reject) => {
-        connection.query(query)
-          .on('error', err => reject(err))
-          .on('row', row => {
-            let type;
-            if (row.typname === 'geometry') {
-              type = dataTypes.postgres.GEOMETRY;
-            } else if (row.typname === 'hstore') {
-              type = dataTypes.postgres.HSTORE;
-            } else if (row.typname === 'geography') {
-              type = dataTypes.postgres.GEOGRAPHY;
-            }
+      return new Promise((resolve, reject) => connection.query(query, (error, result) => error ? reject(error) : resolve(result))).then(result => {
+        for (const row of result.rows) {
+          let type;
+          if (row.typname === 'geometry') {
+            type = dataTypes.postgres.GEOMETRY;
+          } else if (row.typname === 'hstore') {
+            type = dataTypes.postgres.HSTORE;
+          } else if (row.typname === 'geography') {
+            type = dataTypes.postgres.GEOGRAPHY;
+          }
 
-            type.types.postgres.oids.push(row.oid);
-            type.types.postgres.array_oids.push(row.typarray);
+          type.types.postgres.oids.push(row.oid);
+          type.types.postgres.array_oids.push(row.typarray);
 
-            this._refreshTypeParser(type);
-          })
-          .on('end', () => resolve());
+          this._refreshTypeParser(type);
+        }
       });
     });
   }