1 files changed, 110 insertions, 0 deletions
diff --git a/mysql-test/main/win_lead_lag.test b/mysql-test/main/win_lead_lag.test
new file mode 100644
index 00000000000..2824f83789c
--- /dev/null
+++ b/mysql-test/main/win_lead_lag.test
@@ -0,0 +1,110 @@
+create table t1 (
+  pk int primary key,
+  a int,
+  b int,
+  c char(10),
+  d decimal(10, 3),
+  e real
+);
+
+insert into t1 values
+( 1, 0, 1,    'one',    0.1,  0.001),
+( 2, 0, 2,    'two',    0.2,  0.002),
+( 3, 0, 3,    'three',  0.3,  0.003),
+( 4, 1, 2,    'three',  0.4,  0.004),
+( 5, 1, 1,    'two',    0.5,  0.005),
+( 6, 1, 1,    'one',    0.6,  0.006),
+( 7, 2, NULL, 'n_one',  0.5,  0.007),
+( 8, 2, 1,    'n_two',  NULL, 0.008),
+( 9, 2, 2,    NULL,     0.7,  0.009),
+(10, 2, 0,    'n_four', 0.8,  0.010),
+(11, 2, 10,   NULL,     0.9,  NULL);
+
+select pk,
+       lead(pk)    over (order by pk),
+       lead(pk, 1) over (order by pk),
+       lead(pk, 2) over (order by pk),
+       lead(pk, 0) over (order by pk),
+       lead(pk, -1) over (order by pk),
+       lead(pk, -2) over (order by pk)
+from t1
+order by pk asc;
+
+select pk,
+       lag(pk)    over (order by pk),
+       lag(pk, 1) over (order by pk),
+       lag(pk, 2) over (order by pk),
+       lag(pk, 0) over (order by pk),
+       lag(pk, -1) over (order by pk),
+       lag(pk, -2) over (order by pk)
+from t1
+order by pk asc;
+
+select pk, pk - 2,
+       lag(pk, pk - 2) over (order by pk),
+       lead(pk, pk - 2) over (order by pk)
+from t1
+order by pk asc;
+
+select pk, pk - 2,
+       lag(pk, pk + 2) over (order by pk),
+       lead(pk, pk + 2) over (order by pk)
+from t1
+order by pk asc;
+
+select pk, a,
+       lead(pk)    over (partition by a order by pk),
+       lead(pk, 1) over (partition by a order by pk),
+       lead(pk, 2) over (partition by a order by pk),
+       lead(pk, 0) over (partition by a order by pk),
+       lead(pk, -1) over (partition by a order by pk),
+       lead(pk, -2) over (partition by a order by pk)
+from t1
+order by pk asc;
+
+select pk, a,
+       lag(pk)    over (partition by a order by pk),
+       lag(pk, 1) over (partition by a order by pk),
+       lag(pk, 2) over (partition by a order by pk),
+       lag(pk, 0) over (partition by a order by pk),
+       lag(pk, -1) over (partition by a order by pk),
+       lag(pk, -2) over (partition by a order by pk)
+from t1
+order by pk asc;
+
+select pk, a, pk - 2,
+       lag(pk, pk - 2) over (partition by a order by pk),
+       lead(pk, pk - 2) over (partition by a order by pk),
+       lag(pk, a - 2) over (partition by a order by pk),
+       lead(pk, a - 2) over (partition by a order by pk)
+from t1
+order by pk asc;
+
+select pk, a, pk - 2,
+       lag(pk, pk + 2) over (partition by a order by pk),
+       lead(pk, pk + 2) over (partition by a order by pk),
+       lag(pk, a + 2) over (partition by a order by pk),
+       lead(pk, a + 2) over (partition by a order by pk)
+from t1
+order by pk asc;
+
+select pk, a, b, c, d, e,
+           lag(a) over (partition by a order by pk),
+           lag(b) over (partition by a order by pk),
+           lag(c) over (partition by a order by pk),
+           lag(d) over (partition by a order by pk),
+           lag(e) over (partition by a order by pk)
+from t1
+order by pk asc;
+
+select pk, a, b, a+b,
+       lag(a + b) over (partition by a order by pk)
+from t1
+order by pk asc;
+
+select pk, a, b, a+b,
+       lag(a + b) over (partition by a order by pk) + pk
+from t1
+order by pk asc;
+
+drop table t1;