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  1. MariaDB Server
  2. MDEV-29199

Unique hash key is ignored upon INSERT ... SELECT into non-empty MyISAM table

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    Description

      The patch from MDEV-23264 (bb-10.4-MDEV-23264 b2eb92843c) does not fix it.

      --source include/have_sequence.inc
      		 
       
      		 
      create or replace table t (a int, b text, unique(b)) engine=MyISAM;
      		 
      insert into t values (0,'aa');
      		 
      insert into t (a,b) select 1,'xxx' from seq_1_to_5;
      		 
      select * from t;
      		 
       
      		 
      # Cleanup
      		 
      drop table t;

      10.4 f0107c90

      		 
      insert into t (a,b) select 1,'xxx' from seq_1_to_5;
      		 
      select * from t;
      		 
      a	b
      		 
      0	aa
      		 
      1	xxx
      		 
      1	xxx
      		 
      1	xxx
      		 
      1	xxx
      		 
      1	xxx

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          is caused by

          Task - A task that needs to be done. MDEV-371 Unique indexes for blobs

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-23264 Unique blobs allow duplicate values upon UPDATE

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

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              serg Sergei Golubchik
              elenst Elena Stepanova
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              Dates

                Created:
                Updated:
                Resolved:

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