bitbake: persist_data: Add key constraints

Constructs the "key" column in the persistent database as a non-NULL
primary key. This significantly speeds up lookup operations in large
databases.

[YOCTO #13030]

(Bitbake rev: f5ba7775cfcb90401522d977cc66fe0f5aeb7a66)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/bitbake/lib/bb/persist_data.py b/bitbake/lib/bb/persist_data.py
index 1a6319f949..2bc3e766a9 100644
--- a/bitbake/lib/bb/persist_data.py
+++ b/bitbake/lib/bb/persist_data.py
@@ -94,7 +94,7 @@ class SQLTable(collections.MutableMapping):
         self.table = table
         self.connection = connect(self.cachefile)
 
-        self._execute_single("CREATE TABLE IF NOT EXISTS %s(key TEXT, value TEXT);" % table)
+        self._execute_single("CREATE TABLE IF NOT EXISTS %s(key TEXT PRIMARY KEY NOT NULL, value TEXT);" % table)
 
     @_Decorators.retry
     @_Decorators.transaction