jprdonnelly/impala
1
0
Fork 0
mirror of https://github.com/apache/impala.git synced 2026-02-01 12:00:22 -05:00
Code Issues Projects Releases Wiki Activity
Files
ea86aef2f176b866e9f2721e2eb482f968fc9bc3
impala/testdata/workloads/functional-query/queries/QueryTest/nested-struct-in-select-list.test
Daniel Becker b73847f178 IMPALA-10851: Codegen for structs 
IMPALA-9495 added support for struct types in SELECT lists but only with
codegen turned off. This commit implements codegen for struct types.

To facilitate this, code generation for reading and writing 'AnyVal's
has been refactored. A new class, 'CodegenAnyValReadWriteInfo' is
introduced. This class is an interface between sources and destinations,
one of which is an 'AnyVal' object: sources generate an instance of this
class and destinations take that instance and use it to write the value.

The other side can for example be tuples from which we read (in the case
of 'SlotRef') or tuples we write into (in case of materialisation, see
Tuple::CodegenMaterializeExprs()). The main advantage is that sources do
not have to know how to write their destinations, only how to read the
values (and vice versa).

Before this change, many tests that involve structs ran only with
codegen turned off. Now that codegen is supported in these cases, these
tests are also run with codegen on.

Testing:
  - enabed tests for structs in the select list with codegen on in
    tests/query_test/test_nested_types.py
  - enabled codegen in other tests where it used to be disabled because
    it was not supported.

Change-Id: I5272c3f095fd9f07877104ee03c8e43d0c4ec0b6
Reviewed-on: http://gerrit.cloudera.org:8080/18526
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
2023-04-14 13:46:59 +00:00

465 lines
19 KiB
Plaintext
Raw Blame History

====
---- QUERY
# Select a struct that contains multiple structs.
select id, outer_struct
from complextypes_nested_structs;
---- RESULTS
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
3,'NULL'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
---- TYPES
INT,STRING
====
---- QUERY
# Select a struct that contains multiple structs using a filter on a non-struct field.
select id, outer_struct
from complextypes_nested_structs
where id > 2;
---- RESULTS
3,'NULL'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
---- TYPES
INT,STRING
====
---- QUERY
# Select a struct that contains multiple structs using a filter on a struct field.
select id, outer_struct
from complextypes_nested_structs
where length(outer_struct.str) > 3;
---- RESULTS
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
---- TYPES
INT,STRING
====
---- QUERY
# Select a nested struct with an order by.
select id, outer_struct
from complextypes_nested_structs
order by id;
---- RESULTS: VERIFY_IS_EQUAL_SORTED
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
3,'NULL'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
---- TYPES
INT,STRING
====
---- QUERY
# Select a nested struct with an order by and a limit. The limit triggers materialisation
# in the TopN node.
select id, outer_struct
from functional_orc_def.complextypes_nested_structs
order by id limit 2;
---- RESULTS: VERIFY_IS_EQUAL_SORTED
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
---- TYPES
INT,STRING
====
---- QUERY
# Select a nested struct with an order by.
select id, outer_struct
from complextypes_nested_structs
order by id desc;
---- RESULTS: VERIFY_IS_EQUAL_SORTED
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
3,'NULL'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
---- TYPES
INT,STRING
====
---- QUERY
# Select the same nested struct multiple times in one query.
select id, outer_struct, outer_struct
from complextypes_nested_structs;
---- RESULTS
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}','{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}','{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
3,'NULL','NULL'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}','{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}','{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
---- TYPES
INT,STRING,STRING
====
---- QUERY
# Select the same nested struct multiple times in one query and order the results.
select id, outer_struct, outer_struct
from complextypes_nested_structs
order by id desc;
---- RESULTS: VERIFY_IS_EQUAL_SORTED
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}','{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}','{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
3,'NULL','NULL'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}','{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}','{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
---- TYPES
INT,STRING,STRING
====
---- QUERY
# Similar to the above query but here the 'id' field is not in the select list but still
# used in the order by.
select outer_struct, outer_struct
from complextypes_nested_structs
order by id desc;
---- RESULTS: VERIFY_IS_EQUAL_SORTED
'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}','{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}','{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
'NULL','NULL'
'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}','{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}','{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
---- TYPES
STRING,STRING
====
---- QUERY
# Select an inner struct where the outer struct is null.
select outer_struct.inner_struct1 from complextypes_nested_structs
where id = 3;
---- RESULTS
'NULL'
---- TYPES
STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select sub.id, sub.outer_struct from sub;
---- RESULTS
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
3,'NULL'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
---- TYPES
INT,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct and we query a nested
# field.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select sub.id, sub.outer_struct.inner_struct2 from sub;
---- RESULTS
1,'{"i":333222111,"str":"somestr3"}'
2,'{"i":100,"str":"str3"}'
3,'NULL'
4,'{"i":1,"str":"string"}'
5,'NULL'
---- TYPES
INT,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct and we query a doubly
# nested field.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select sub.id, sub.outer_struct.inner_struct2.i from sub;
---- RESULTS
1,333222111
2,100
3,NULL
4,1
5,NULL
---- TYPES
INT,INT
====
---- QUERY
# WITH clause creates an inline view containing a nested struct and one of its members
# that is a struct itself; query both in the main select statement.
with sub as (
select id, outer_struct, outer_struct.inner_struct3 inner3
from complextypes_nested_structs)
select id, outer_struct, inner3 from sub;
---- RESULTS
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}','{"s":{"i":112288,"s":null}}'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}','{"s":{"i":321,"s":"dfgs"}}'
3,'NULL','NULL'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}','{"s":null}'
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}','NULL'
---- TYPES
INT,STRING,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct ('outer_struct') and one
# of its members that is a struct itself ('inner3'); query a different member of
# 'outer_struct' as well as 'inner3' in the main select statement.
with sub as (
select id, outer_struct, outer_struct.inner_struct3 inner3
from complextypes_nested_structs)
select id, outer_struct.inner_struct2, inner3 from sub;
---- RESULTS
1,'{"i":333222111,"str":"somestr3"}','{"s":{"i":112288,"s":null}}'
2,'{"i":100,"str":"str3"}','{"s":{"i":321,"s":"dfgs"}}'
3,'NULL','NULL'
4,'{"i":1,"str":"string"}','{"s":null}'
5,'NULL','NULL'
---- TYPES
INT,STRING,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct ('outer_struct') and one
# of its members that is a struct itself ('inner3'); query a different member of
# 'outer_struct' as well as a member of 'inner3' in the main select statement.
with sub as (
select id, outer_struct, outer_struct.inner_struct3 inner3
from complextypes_nested_structs)
select id, outer_struct.inner_struct2, inner3.s from sub;
---- RESULTS
1,'{"i":333222111,"str":"somestr3"}','{"i":112288,"s":null}'
2,'{"i":100,"str":"str3"}','{"i":321,"s":"dfgs"}'
3,'NULL','NULL'
4,'{"i":1,"str":"string"}','NULL'
5,'NULL','NULL'
---- TYPES
INT,STRING,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct; we order by id.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select sub.id, sub.outer_struct.inner_struct2 from sub order by sub.id desc;
---- RESULTS
5,'NULL'
4,'{"i":1,"str":"string"}'
3,'NULL'
2,'{"i":100,"str":"str3"}'
1,'{"i":333222111,"str":"somestr3"}'
---- TYPES
INT,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct; we order by a nested
# field.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select sub.id, sub.outer_struct.inner_struct2 from sub
order by sub.outer_struct.inner_struct2.i, sub.id;
---- RESULTS
4,'{"i":1,"str":"string"}'
2,'{"i":100,"str":"str3"}'
1,'{"i":333222111,"str":"somestr3"}'
3,'NULL'
5,'NULL'
---- TYPES
INT,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct; we order by a nested
# field that is not present in the select list.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select sub.id, sub.outer_struct.inner_struct1 from sub
order by sub.outer_struct.inner_struct2.i, sub.id;
---- RESULTS
4,'{"str":"somestr2","de":12345.12}'
2,'NULL'
1,'{"str":"somestr2","de":12345.12}'
3,'NULL'
5,'NULL'
---- TYPES
INT,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct; filter by a struct field
# from the inline view.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select sub.id, sub.outer_struct.str
from sub
where length(sub.outer_struct.str) < 4;
---- RESULTS
2,'str'
4,''
---- TYPES
INT,STRING
====
---- QUERY
# WITH clause creates an inline view containing a two structs; select only one of them and
# filter by one of its fields.
with sub as (
select id, outer_struct.inner_struct1 s1, outer_struct.inner_struct2 s2
from complextypes_nested_structs)
select sub.id, s2
from sub
where length(s2.str) < 8;
---- RESULTS
2,'{"i":100,"str":"str3"}'
4,'{"i":1,"str":"string"}'
---- TYPES
INT,STRING
====
---- QUERY
# WITH clause creates an inline view containing a nested struct; filter by a struct field
# from the inline view but do not select anything from it.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select 1
from sub
where length(sub.outer_struct.str) < 4;
---- RESULTS
1
1
---- TYPES
TINYINT
====
---- QUERY
# WITH clause creates an inline view containing a nested struct. Also has a filter on
# the inline view and ordering by a non-complex item from the view.
with sub as (
select id, outer_struct
from complextypes_nested_structs
where length(outer_struct.str) > 3)
select sub.id, sub.outer_struct from sub order by sub.id desc;
---- RESULTS
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
---- TYPES
INT,STRING
====
---- QUERY
# Two-level inline view, querying a struct filed.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select id, s from (select id, outer_struct.inner_struct1 as s from sub) v
order by id;
---- RESULTS
1,'{"str":"somestr2","de":12345.12}'
2,'NULL'
3,'NULL'
4,'{"str":"somestr2","de":12345.12}'
5,'NULL'
---- TYPES
INT,STRING
====
---- QUERY
# Two-level inline view, querying the top level struct.
with sub as (
select id, outer_struct from complextypes_nested_structs)
select id, s from (select id, outer_struct as s from sub) v
order by id;
---- RESULTS
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
3,'NULL'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
5,'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}'
---- TYPES
INT,STRING
====
---- QUERY
# Select a struct that contains multiple structs using a filter on multiple struct fields
# when the struct fields in the predicate are itemTupleDescriptors within the struct(s),
# not in the main tuple.
select id, outer_struct
from complextypes_nested_structs
where outer_struct.inner_struct2.i > length(outer_struct.str)
---- RESULTS
1,'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}'
2,'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}'
4,'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}'
---- TYPES
INT,STRING
====
---- QUERY
# Select a nested struct member first, and then the enclosing struct so that even the
# enclosing struct is embedded in another one, but the top level struct is not present in
# the query.
select id, outer_struct.inner_struct2.i, outer_struct.inner_struct2
from complextypes_nested_structs;
---- RESULTS
1,333222111,'{"i":333222111,"str":"somestr3"}'
2,100,'{"i":100,"str":"str3"}'
3,NULL,'NULL'
4,1,'{"i":1,"str":"string"}'
5,NULL,'NULL'
---- TYPES
INT,INT,STRING
====
---- QUERY
# An inner join where struct fields are in the join condition and their parent struct is
# in the select list.
select a.outer_struct, b.small_struct
from complextypes_nested_structs a
inner join complextypes_structs b
on b.small_struct.i = a.outer_struct.inner_struct2.i + 19091;
---- RESULTS
'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}','{"i":19191,"s":"small_struct_str"}'
---- TYPES
STRING,STRING
====
---- QUERY
# An outer join where struct fields are in the join condition and their parent struct is
# in the select list.
select a.outer_struct, b.small_struct
from complextypes_nested_structs a
full outer join complextypes_structs b
on b.small_struct.i = a.outer_struct.inner_struct2.i + 19091;
---- RESULTS
'{"str":"somestr1","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":333222111,"str":"somestr3"},"inner_struct3":{"s":{"i":112288,"s":null}}}','NULL'
'{"str":"str","inner_struct1":null,"inner_struct2":{"i":100,"str":"str3"},"inner_struct3":{"s":{"i":321,"s":"dfgs"}}}','{"i":19191,"s":"small_struct_str"}'
'NULL','NULL'
'{"str":"","inner_struct1":{"str":"somestr2","de":12345.12},"inner_struct2":{"i":1,"str":"string"},"inner_struct3":{"s":null}}','NULL'
'{"str":null,"inner_struct1":null,"inner_struct2":null,"inner_struct3":null}','NULL'
'NULL','{"i":98765,"s":"abcde f"}'
'NULL','{"i":98765,"s":null}'
'NULL','{"i":null,"s":null}'
'NULL','{"i":null,"s":"str"}'
'NULL','NULL'
---- TYPES
STRING,STRING
====
---- QUERY
# Checks that "SELECT nested_struct.* ..." omits the nested structs from the output.
select id, outer_struct.* from complextypes_nested_structs;
---- RESULTS
1,'somestr1'
2,'str'
3,'NULL'
4,''
5,'NULL'
---- TYPES
INT,STRING
====
---- QUERY
# IMPALA-10839: Display nulls at the correct level.
select id, outer_struct.inner_struct3
from complextypes_nested_structs;
---- RESULTS
1,'{"s":{"i":112288,"s":null}}'
2,'{"s":{"i":321,"s":"dfgs"}}'
3,'NULL'
4,'{"s":null}'
5,'NULL'
---- TYPES
INT,STRING
====
---- QUERY
# IMPALA-10839: Display nulls at the correct level.
select id, outer_struct.inner_struct3.s
from complextypes_nested_structs;
---- RESULTS
1,'{"i":112288,"s":null}'
2,'{"i":321,"s":"dfgs"}'
3,'NULL'
4,'NULL'
5,'NULL'
---- TYPES
INT,STRING
====
---- QUERY
# Subquery that returns a complex type is not supported.
# IMPALA-9500
select outer_struct
from complextypes_nested_structs
where outer_struct in
(select outer_struct from functional_parquet.complextypes_nested_structs);
---- CATCH
AnalysisException: A subquery can't return complex types. (SELECT outer_struct FROM functional_parquet.complex
types_nested_structs)
====
Reference in New Issue View Git Blame Copy Permalink