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Fix for BUG#35570 "CHECKSUM TABLE unreliable if LINESTRING field (same content/ differen

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checksum)"

The problem was that checksum of GEOMETRY type used memory addresses
in the computation, making it un-repeatable thus useless.
(This patch is a backport from 6.0 branch)
This commit is contained in:
Kristofer Pettersson
2009-09-21 11:58:15 +02:00
parent 264c433d53
commit b2beff7415
3 changed files with 42 additions and 2 deletions
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10
sql/sql_table.cc
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@ -7897,8 +7897,14 @@ bool mysql_checksum_table(THD *thd, TABLE_LIST *tables,
for (uint i= 0; i < t->s->fields; i++ )
{
Field *f= t->field[i];
if ((f->type() == MYSQL_TYPE_BLOB) ||
(f->type() == MYSQL_TYPE_VARCHAR))
enum_field_types field_type= f->type();
/*
BLOB and VARCHAR have pointers in their field, we must convert
to string; GEOMETRY is implemented on top of BLOB.
*/
if ((field_type == MYSQL_TYPE_BLOB) ||
(field_type == MYSQL_TYPE_VARCHAR) ||
(field_type == MYSQL_TYPE_GEOMETRY))
{
String tmp;
f->val_str(&tmp);