database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00
Code Activity

Fix for bug #21205: Different number of digits for float/double/real in --ps-protocol

Browse Source 
Various parts of code used different 'precision' arguments for sprintf("%g") when converting
floating point numbers to a string. This led to differences in results in some cases 
depending on whether the text-based or prepared statements protocol is used for a query.

Fixed by changing arguments to sprintf("%g") to always be 15 (DBL_DIG) so that results are
consistent regardless of the protocol.

This patch will be null-merged to 6.0 as the problem does not exists there (fixed by the
patch for WL#2934).

client/sql_string.cc:
  Use 15 (DBL_DIG) as a precision argument for sprintf(), as Field_double::val_str() does.
libmysql/libmysql.c:
  Use 15 (DBL_DIG) as a precision argument for sprintf(), as Field_double::val_str() does.
mysql-test/r/archive_gis.result:
  Fixed test results to take additional precision into account.
mysql-test/r/func_group.result:
  Fixed test results to take additional precision into account.
mysql-test/r/func_math.result:
  Fixed test results to take additional precision into account.
mysql-test/r/func_str.result:
  Fixed test results to take additional precision into account.
mysql-test/r/gis.result:
  Fixed test results to take additional precision into account.
mysql-test/r/innodb_gis.result:
  Fixed test results to take additional precision into account.
mysql-test/r/select.result:
  Fixed test results to take additional precision into account.
mysql-test/r/sp.result:
  Fixed test results to take additional precision into account.
mysql-test/r/type_float.result:
  Fixed test results to take additional precision into account.
mysql-test/t/type_float.test:
  Fixed test results to take additional precision into account.
sql/sql_string.cc:
  Use 15 (DBL_DIG) as a precision argument for sprintf(), as Field_double::val_str() does.
This commit is contained in:
Alexey Kopytov
2009-01-28 20:59:08 +03:00
parent 386ec13b59
commit a01946373d
13 changed files with 58 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
mysql-test/r/innodb_gis.result
View File

@ -291,7 +291,7 @@ Note 1003 select astext(startpoint(`test`.`gis_line`.`g`)) AS `AsText(StartPoint
SELECT fid, AsText(Centroid(g)) FROM gis_polygon ORDER by fid;
fid AsText(Centroid(g))
108 POINT(15 15)
109 POINT(25.416666666667 25.416666666667)
109 POINT(25.4166666666667 25.4166666666667)
110 POINT(20 10)
SELECT fid, Area(g) FROM gis_polygon ORDER by fid;
fid Area(g)
@ -325,8 +325,8 @@ fid IsClosed(g)
116 0
SELECT fid, AsText(Centroid(g)) FROM gis_multi_polygon ORDER by fid;
fid AsText(Centroid(g))
117 POINT(55.588527753042 17.426536064114)
118 POINT(55.588527753042 17.426536064114)
117 POINT(55.5885277530424 17.426536064114)
118 POINT(55.5885277530424 17.426536064114)
119 POINT(2 2)
SELECT fid, Area(g) FROM gis_multi_polygon ORDER by fid;
fid Area(g)