[MDEV-34624] CONCAT() returns incorerct result with cursor protocol for engine Rocksdb - Jira

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Type: Bug
Status: Open (View Workflow)
Priority: Major
Resolution: Unresolved
Affects Version/s: 10.5, 10.6, 10.11, 11.1(EOL), 11.2, 11.4, 11.6, 11.5(EOL)
Fix Version/s: 10.5, 10.6, 10.11, 11.2, 11.4, 11.6
Component/s: Storage Engine - RocksDB
Labels:
None

CONCAT() cuts part of the string with result:
Case: (run MTR test with --cursor-protocol):

 CREATE TABLE t1 (

  f20_3 FLOAT(20,3) ,

  d53 DOUBLE(53,0) ,

  d53_10 DOUBLE(53,10)

)  ENGINE=rocksdb;

INSERT INTO t1 (f20_3,d53,d53_10) VALUES (

  99999999999999999.999,

  1999999999999999999999999999999999999999999999999999999,

  19999999999999999999999999999999999999999999.9999999999

);

query_vertical

SELECT

  CONCAT('', f20_3),

  CONCAT('', d53),

  CONCAT('', d53_10) FROM t1;

Expected result:

CONCAT('', f20_3)      99999998430674940.000

CONCAT('', d53)        100000000000000000000000000000000000000000000000000000

CONCAT('', d53_10)     10000000000000000000000000000000000000000000.0000000000

Actual result:

CONCAT('', f20_3)      99999998430674940.00

CONCAT('', d53)        10000000000000000000000000000000000000000000000000000

CONCAT('', d53_10)     10000000000000000000000000000000000000000000.00000000

relates to

MDEV-31005 Make working ./mtr --cursor-protocol

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