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-rw-r--r--jstests/proj_key1.js28
1 files changed, 28 insertions, 0 deletions
diff --git a/jstests/proj_key1.js b/jstests/proj_key1.js
new file mode 100644
index 0000000..ad944f7
--- /dev/null
+++ b/jstests/proj_key1.js
@@ -0,0 +1,28 @@
+
+t = db.proj_key1;
+t.drop();
+
+as = []
+
+for ( i=0; i<10; i++ ){
+ as.push( { a : i } )
+ t.insert( { a : i , b : i } );
+}
+
+assert( ! t.find( {} , { a : 1 } ).explain().indexOnly , "A1" )
+
+t.ensureIndex( { a : 1 } )
+
+assert( t.find( { a : { $gte : 0 } } , { a : 1 , _id : 0 } ).explain().indexOnly , "A2" )
+
+assert( ! t.find( { a : { $gte : 0 } } , { a : 1 } ).explain().indexOnly , "A3" ) // because id _id
+
+// assert( t.find( {} , { a : 1 , _id : 0 } ).explain().indexOnly , "A4" ); // TODO: need to modify query optimier SERVER-2109
+
+assert.eq( as , t.find( { a : { $gte : 0 } } , { a : 1 , _id : 0 } ).toArray() , "B1" )
+assert.eq( as , t.find( { a : { $gte : 0 } } , { a : 1 , _id : 0 } ).batchSize(2).toArray() , "B1" )
+
+
+
+
+