From e19f58fc01a9326c28071f2dee3089bf50cd5ea8 Mon Sep 17 00:00:00 2001
From: Nick Pope <nick.pope@flightdataservices.com>
Date: Fri, 18 Jan 2019 23:24:05 +0000
Subject: [PATCH] Inlined DatabaseIntrospection._table_info() for SQLite.

---
 django/db/backends/sqlite3/introspection.py | 27 ++++-----------------
 1 file changed, 5 insertions(+), 22 deletions(-)

diff --git a/django/db/backends/sqlite3/introspection.py b/django/db/backends/sqlite3/introspection.py
index 490606c64d..2a5c64dd26 100644
--- a/django/db/backends/sqlite3/introspection.py
+++ b/django/db/backends/sqlite3/introspection.py
@@ -83,18 +83,13 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
         Return a description of the table with the DB-API cursor.description
         interface.
         """
+        cursor.execute('PRAGMA table_info(%s)' % self.connection.ops.quote_name(table_name))
         return [
             FieldInfo(
-                info['name'],
-                info['type'],
-                None,
-                info['size'],
-                None,
-                None,
-                info['null_ok'],
-                info['default'],
-                info['pk'] == 1,
-            ) for info in self._table_info(cursor, table_name)
+                name, data_type, None, get_field_size(data_type), None, None,
+                not notnull, default, pk == 1,
+            )
+            for cid, name, data_type, notnull, default, pk in cursor.fetchall()
         ]
 
     def get_sequences(self, cursor, table_name, table_fields=()):
@@ -211,18 +206,6 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
                 return m.group(1) if m.group(1) else m.group(2)
         return None
 
-    def _table_info(self, cursor, name):
-        cursor.execute('PRAGMA table_info(%s)' % self.connection.ops.quote_name(name))
-        # cid, name, type, notnull, default_value, pk
-        return [{
-            'name': field[1],
-            'type': field[2],
-            'size': get_field_size(field[2]),
-            'null_ok': not field[3],
-            'default': field[4],
-            'pk': field[5],  # undocumented
-        } for field in cursor.fetchall()]
-
     def _get_foreign_key_constraints(self, cursor, table_name):
         constraints = {}
         cursor.execute('PRAGMA foreign_key_list(%s)' % self.connection.ops.quote_name(table_name))