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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2020/05/27 04:02:53 UTC

[GitHub] [shardingsphere] wangjing112 opened a new issue #5803: error in MySQLNullBitmap cause result wrong when more then one NULL fields.

wangjing112 opened a new issue #5803:
URL: https://github.com/apache/shardingsphere/issues/5803


   direct show the wrong code in class:org.apache.shardingsphere.db.protocol.mysql.packet.command.query.binary.execute.MySQLNullBitmap
   
   `
   
       /**
        * Set null bit.
        *
        * @param index column index
        */
       public void setNullBit(final int index) {
           nullBitmap[getBytePosition(index)] = 1 << getBitPosition(index);
       }
   `
   
   in mysql protocal :https://dev.mysql.com/doc/internals/en/null-bitmap.html
   `
   nulls[byte_pos] |= 1 << bit_pos
   `
   
   so the right is:
   `
   
       public void setNullBit(final int index) {
           nullBitmap[getBytePosition(index)] |= 1 << getBitPosition(index);
       }
   `
   
   this is reason issue #4707 


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[GitHub] [shardingsphere] kimmking commented on issue #5803: error in MySQLNullBitmap cause result wrong when more then one NULL fields.

Posted by GitBox <gi...@apache.org>.
kimmking commented on issue #5803:
URL: https://github.com/apache/shardingsphere/issues/5803#issuecomment-634002828


   do you want to fix it?
   


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[GitHub] [shardingsphere] terrymanu closed issue #5803: error in MySQLNullBitmap cause result wrong when more then one NULL fields.

Posted by GitBox <gi...@apache.org>.
terrymanu closed issue #5803:
URL: https://github.com/apache/shardingsphere/issues/5803


   


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[GitHub] [shardingsphere] tuohai666 commented on issue #5803: error in MySQLNullBitmap cause result wrong when more then one NULL fields.

Posted by GitBox <gi...@apache.org>.
tuohai666 commented on issue #5803:
URL: https://github.com/apache/shardingsphere/issues/5803#issuecomment-639368580


   @wangjing112  I believe you have spent much time to find the root cause. Thanks for your effort.


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