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-rw-r--r--lib/sqlalchemy/dialects/postgresql/base.py7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py
index 2356458b9..d613aac92 100644
--- a/lib/sqlalchemy/dialects/postgresql/base.py
+++ b/lib/sqlalchemy/dialects/postgresql/base.py
@@ -1170,7 +1170,12 @@ class PGCompiler(compiler.SQLCompiler):
def for_update_clause(self, select, **kw):
if select._for_update_arg.read:
- tmp = " FOR SHARE"
+ if select._for_update_arg.key_share:
+ tmp = " FOR KEY SHARE"
+ else:
+ tmp = " FOR SHARE"
+ elif select._for_update_arg.key_share:
+ tmp = " FOR NO KEY UPDATE"
else:
tmp = " FOR UPDATE"