Merge branch 'dbartol/join-order' of https://github.com/github/vscode-codeql into dbartol/join-order

Author: Dave Bartolomeo

extensions/ql-vscode/src/log-insights/join-order.ts

@@ -74,7 +74,7 @@ function getMainHash(event: InLayer | ComputeRecursive): string {
 }
 
 /**
- * Sum arrays a and b element-wise, and pad with 0s if the arrays are not the same length.
+ * Sum arrays a and b element-wise. The shorter array is padded with 0s if the arrays are not the same length.
  */
 function pointwiseSum(a: Int32Array, b: Int32Array): Int32Array {
   function reportIfInconsistent(ai: number, bi: number) {
@@ -248,7 +248,7 @@ class JoinOrderScanner implements EvaluationLogScanner {
             const key = makeKey(
               event.queryCausingWork,
               predicate,
-              '(' + raReference + ')'
+              `(${raReference})`
             );
             const maxTupleCount = Math.max(...bucket.tupleCounts);
             const resultSize = bucket.resultSize;