From 925a3c1149db64e7905bd4b4de07cf6ebba50585 Mon Sep 17 00:00:00 2001 From: fzyzcjy <117010016@link.cuhk.edu.cn> Date: Sun, 4 Apr 2021 09:23:56 +0800 Subject: [PATCH 1/2] fix typo of "not need for lab 1-3" into "lab 1-2" since need to do it in lab3 --- src/java/simpledb/optimizer/JoinOptimizer.java | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/java/simpledb/optimizer/JoinOptimizer.java b/src/java/simpledb/optimizer/JoinOptimizer.java index 3d8d7b9b..1138421f 100644 --- a/src/java/simpledb/optimizer/JoinOptimizer.java +++ b/src/java/simpledb/optimizer/JoinOptimizer.java @@ -221,7 +221,7 @@ public List orderJoins( Map stats, Map filterSelectivities, boolean explain) throws ParsingException { - //Not necessary for labs 1--3 + // Not necessary for labs 1--2 // See the Lab 3 writeup for some hints as to how this function // should work. From 598886b9c11291eb029619fc9d3c4ce27c4b6099 Mon Sep 17 00:00:00 2001 From: fzyzcjy <117010016@link.cuhk.edu.cn> Date: Sun, 4 Apr 2021 09:26:42 +0800 Subject: [PATCH 2/2] Update JoinOptimizer.java --- src/java/simpledb/optimizer/JoinOptimizer.java | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/java/simpledb/optimizer/JoinOptimizer.java b/src/java/simpledb/optimizer/JoinOptimizer.java index 1138421f..ec93ea84 100644 --- a/src/java/simpledb/optimizer/JoinOptimizer.java +++ b/src/java/simpledb/optimizer/JoinOptimizer.java @@ -199,7 +199,7 @@ public Set> enumerateSubsets(List v, int size) { /** * Compute a logical, reasonably efficient join on the specified tables. See - * PS4 for hints on how this should be implemented. + * PS3 for hints on how this should be implemented. * * @param stats * Statistics for each table involved in the join, referenced by