Merge "implement batched INSERT..VALUES () () for executemany" into main

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/sqlalchemy/dialects/sqlite/base.py b/lib/sqlalchemy/dialects/sqlite/base.py
index 88c6dbe18..e57a84fe0 100644
--- a/lib/sqlalchemy/dialects/sqlite/base.py
+++ b/lib/sqlalchemy/dialects/sqlite/base.py
@@ -1936,6 +1936,7 @@ class SQLiteDialect(default.DefaultDialect):
     supports_empty_insert = False
     supports_cast = True
     supports_multivalues_insert = True
+    use_insertmanyvalues = True
     tuple_in_values = True
     supports_statement_cache = True
     insert_null_pk_still_autoincrements = True
@@ -1944,6 +1945,13 @@ class SQLiteDialect(default.DefaultDialect):
     delete_returning = True
     update_returning_multifrom = True
 
+    supports_default_metavalue = True
+    """dialect supports INSERT... VALUES (DEFAULT) syntax"""
+
+    default_metavalue_token = "NULL"
+    """for INSERT... VALUES (DEFAULT) syntax, the token to put in the
+    parenthesis."""
+
     default_paramstyle = "qmark"
     execution_ctx_cls = SQLiteExecutionContext
     statement_compiler = SQLiteCompiler
@@ -2055,6 +2063,10 @@ class SQLiteDialect(default.DefaultDialect):
                     self.delete_returning
                 ) = self.insert_returning = False
 
+            if self.dbapi.sqlite_version_info < (3, 32, 0):
+                # https://www.sqlite.org/limits.html
+                self.insertmanyvalues_max_parameters = 999
+
     _isolation_lookup = util.immutabledict(
         {"READ UNCOMMITTED": 1, "SERIALIZABLE": 0}
     )