spark git commit: [MINOR][SQL] add new unit test to LimitPushdown

Repository: spark Updated Branches: refs/heads/branch-2.3 500c94434 -> a857ad566 [MINOR][SQL] add new unit test to LimitPushdown ## What changes were proposed in this pull request? This PR is repaired as follows 1、update y -> x in "left outer join" test case ,maybe is mistake. 2、add a

spark git commit: [MINOR][SQL] add new unit test to LimitPushdown

Repository: spark Updated Branches: refs/heads/master bc9641d90 -> 6f0ba8472 [MINOR][SQL] add new unit test to LimitPushdown ## What changes were proposed in this pull request? This PR is repaired as follows 1、update y -> x in "left outer join" test case ,maybe is mistake. 2、add a new