Hello Sergei
Actually i have one doubt there is two options
1 add is_hash flag to field
2 add ha_unique_hash flag to field ,but i think all 16 bits of key flag is used
so to do this i need to add another ex_flag variable in key struct and
store it and retrieve it from frm
currently i have done both ,but as you pointed out in review that it
is better to have it in key only but
my question is that , whether is this approach is right ?
Regards
sachin
On Tue, Jul 12, 2016 at 2:43 PM, Sachin Setia
Hello everyone,
Weekly Report for 7th week of gsoc
1Now we can alter blob columns query like create table t1(abc blob unique); alter table t1 change column abc a blob; Even we can some multiple changes in one alter create table t1(abc blob unique, xyz blob unique); alter table t1 change column abc a blob , change xyz x blob; Works.
2.Now we can delete blob columns if only one blob unique in key then db_row_hash_ will be removed other wise hash_str will be modified.If the query fails then there will be no side effect
3.chaning of delete operations create table t1(abc blob , xyz blob , pqr blob, unique(abc,xyz,pqr)); alter table t1 drop column abc, drop column xyz; 4. we will get right error message instead of duplicate hash 5. these was an glich in code when we try to add db_row_hash_ column to table with first key work mysql_prepare_alter_table select this instead of real hash now solved. 6. Added some test case.Will add more soon. @Sergei will reply to you soon. Regards sachin