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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/09/14 08:18:13 UTC

[GitHub] [spark] maropu commented on pull request #29728: [SPARK-32856][SQL] Prohibit binary comparisons chain

maropu commented on pull request #29728:
URL: https://github.com/apache/spark/pull/29728#issuecomment-691898796


   > Most SQL engine do not support
   >> postgres=# create table t3(a int, b int, c int);
   >> CREATE TABLE
   >> postgres=# select * from t3 where a = b =c;
   >> ERROR:  syntax error at or near "="
   
   Is the example in the PR description PostgreSQL one?


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