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+#
+# MDEV-371 Unique indexes for blobs
+#
+--echo #structure of tests;
+--echo #1 test of table containing single unique blob column;
+--echo #2 test of table containing another unique int/ varchar etc column; 
+--echo #3 test of table containing multiple unique blob column like unique(a),unique(b);
+--echo #4 test of table containing multiple multiple unique blob column like unique(a,b...),unique(c,d....);
+--echo #structure of each test;
+--echo #test if update works;
+--echo #test update for duplicate entry;
+--echo #test update for no change keys;
+--echo #test update for ignore ;
+
+--echo #test 1
+create table t1 (a blob unique);
+query_vertical show keys from t1;
+insert into t1 values(1),(2),(3),(4),(5);
+select * from t1;
+update t1 set a=11 where a=5;
+update t1 set a=a+20 where a=1;
+select * from t1;
+--error ER_DUP_ENTRY
+update t1 set a=3 where a=2;
+--error ER_DUP_ENTRY
+update t1 set a=4 where a=3;
+--echo #no change in blob key
+update t1 set a=3 where a=3;
+update t1 set a=2 where a=2;
+select* from t1;
+--echo #IGNORE;
+update ignore t1 set a=3 where a=2;
+update ignore t1 set a=4 where a=3;
+select * from t1;
+drop table t1;
+
+--echo #test 2;
+create table t1 (a int primary key, b blob unique , c int unique );
+show keys from t1;
+insert into t1 values(1,1,1),(2,2,2),(3,3,3),(4,4,4),(5,5,5),(6,6,6),(7,7,7);
+select * from t1 limit 3;
+update t1 set b=34 where a=1;
+update t1 set b=a+c+b+34 where b=2;
+update t1 set b=a+10+b where c=3;
+select * from t1;
+truncate table t1;
+insert into t1 values(1,1,1),(2,2,2),(3,3,3),(4,4,4),(5,5,5),(6,6,6),(7,7,7);
+--error ER_DUP_ENTRY
+update t1 set b=4 where a=3;
+--error ER_DUP_ENTRY
+update t1 set b=a+1 where b=3;
+--error ER_DUP_ENTRY
+update t1 set b=a+1 where c=3;
+--echo #no change in blob key
+update t1 set b=3 where a=3;
+update t1 set b=2 where b=2;
+update t1 set b=5 where c=5;
+select* from t1;
+--echo #IGNORE;
+update ignore t1 set b=3 where a=2;
+update ignore t1 set b=4 where b=3;
+update ignore t1 set b=5 where c=3;
+select * from t1;
+drop table t1;
+
+--echo #test 3;
+create table t1 (a blob unique, b blob unique , c blob unique);
+show keys from t1;
+insert into t1 values(1,1,1),(2,2,2),(3,3,3),(4,4,4),(5,5,5),(6,6,6),(7,7,7);
+select * from t1 limit 3;
+update t1 set b=34 where a=1;
+update t1 set b=a+c+b+34 where b=2;
+update t1 set b=a+10+b where c=3;
+select * from t1;
+truncate table t1;
+insert into t1 values(1,1,1),(2,2,2),(3,3,3),(4,4,4),(5,5,5),(6,6,6),(7,7,7);
+--error ER_DUP_ENTRY
+update t1 set b=4 where a=3;
+--error ER_DUP_ENTRY
+update t1 set b=a+1 where b=3;
+--error ER_DUP_ENTRY
+update t1 set b=a+1 where c=3;
+--echo #no change in blob key
+update t1 set b=3 where a=3;
+update t1 set b=2 where b=2;
+update t1 set b=5 where c=5;
+select* from t1;
+--echo #IGNORE;
+update ignore t1 set b=3 where a=2;
+update ignore t1 set b=4 where b=3;
+update ignore t1 set b=5 where c=3;
+update ignore t1 set b=b+3 where a>1 or b>1 or c>1;
+select * from t1;
+update ignore t1 set b=b+5 where a>1 and  b<5 and  c<a+b;
+select * from t1;
+drop table t1;
+
+--echo #test 4 ultimate test;
+create table t1 (a int primary key , b int, c blob , d blob , e  varchar(2000), f int , g text, 
+unique (b,c), unique (b,f),unique(e,g),unique(a,b,c,d,e,f,g));
+desc t1;
+show create table t1;
+show keys from t1;
+insert into t1 values(1,1,1,1,1,1,1),(2,2,2,2,2,2,2),(3,3,3,3,3,3,3),(4,4,4,4,4,4,4),
+(5,5,5,5,5,5,5),(6,6,6,6,6,6,6),(7,7,7,7,7,7,7),(8,8,8,8,8,8,8),(9,9,9,9,9,9,9);
+select * from t1 limit 3;
+--echo #key b_c
+--error ER_DUP_ENTRY
+update t1 set b=2 ,c=2 where a=1;
+update t1 set b=b+34, c=c+34 where e=1 and g=1 ;
+update t1 set b=35, c=35 where e=1 and g=1 ;
+--error ER_DUP_ENTRY
+update t1 set b=b+1, c=c+1 where a>0;
+update ignore t1 set b=b+1, c=c+1 where a>0;
+select * from t1 ;
+truncate table t1;
+insert into t1 values(1,1,1,1,1,1,1),(2,2,2,2,2,2,2),(3,3,3,3,3,3,3),(4,4,4,4,4,4,4),
+(5,5,5,5,5,5,5),(6,6,6,6,6,6,6),(7,7,7,7,7,7,7),(8,8,8,8,8,8,8),(9,9,9,9,9,9,9);
+--echo #key b_f no hash key
+--error ER_DUP_ENTRY
+update t1 set b=2 , f=2 where a=1;
+update  t1 set b=b+33, f=f+33 where e=1 and g=1;
+update t1 set b=34, f=34 where e=1 and g=1 ;
+--error ER_DUP_ENTRY
+update t1 set b=b+1, f=f+1 where a>0;
+update ignore t1 set b=b+1, f=f+1 where a>0;
+select * from t1 ;
+truncate table t1;
+insert into t1 values(1,1,1,1,1,1,1),(2,2,2,2,2,2,2),(3,3,3,3,3,3,3),(4,4,4,4,4,4,4),
+(5,5,5,5,5,5,5),(6,6,6,6,6,6,6),(7,7,7,7,7,7,7),(8,8,8,8,8,8,8),(9,9,9,9,9,9,9);
+--echo #key e_g
+--error ER_DUP_ENTRY
+update t1 set e=2 , g=2 where a=1;
+update  t1 set e=e+34, g=g+34 where a=1;
+update t1 set e=34, g=34 where e=1 and g=1 ;
+select * from t1 where  a=1;
+--error ER_DUP_ENTRY
+update t1 set e=e+1, g=g+1 where a>0;
+update ignore t1 set e=e+1, g=g+1 where a>0;
+select * from t1 ;
+drop table t1;