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// Cannot implicitly shard accessed collections because of following errmsg: A single
// update/delete on a sharded collection must contain an exact match on _id or contain the shard
// key.
// @tags: [assumes_unsharded_collection]
t = db.find_and_modify2;
t.drop();
t.insert({_id: 1, i: 0, j: 0});
out = t.findAndModify({update: {$inc: {i: 1}}, 'new': true, fields: {i: 1}});
assert.eq(out, {_id: 1, i: 1});
out = t.findAndModify({update: {$inc: {i: 1}}, fields: {i: 0}});
assert.eq(out, {_id: 1, j: 0});
out = t.findAndModify({update: {$inc: {i: 1}}, fields: {_id: 0, j: 1}});
assert.eq(out, {j: 0});
out = t.findAndModify({update: {$inc: {i: 1}}, fields: {_id: 0, j: 1}, 'new': true});
assert.eq(out, {j: 0});
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