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Describe should work if given a path that references to a complex-typed column of a table. It should produce output that lists the names and types of all valid subpaths of the column (e.g. struct fields, or key/val for a map). This changes some error messages in resolving paths, since we can no longer definitively determine based on the path length whether the first path element is meant to be the db or the table. Change-Id: I8a54e83df67141011ff5396c98f9eb0bde0fb04c Reviewed-on: http://gerrit.cloudera.org:8080/863 Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com> Tested-by: Internal Jenkins
132 lines
3.1 KiB
Plaintext
132 lines
3.1 KiB
Plaintext
====
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---- QUERY
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# Simple describe (note Hive does not support this)
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describe functional.alltypes
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---- RESULTS
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'id','int','Add a comment'
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'bool_col','boolean',''
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'tinyint_col','tinyint',''
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'smallint_col','smallint',''
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'int_col','int',''
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'bigint_col','bigint',''
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'float_col','float',''
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'double_col','double',''
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'date_string_col','string',''
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'string_col','string',''
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'timestamp_col','timestamp',''
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'year','int',''
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'month','int',''
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---- TYPES
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string, string, string
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====
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---- QUERY
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USE functional
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====
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---- QUERY
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# Default database
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describe alltypes
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---- RESULTS
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'id','int','Add a comment'
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'bool_col','boolean',''
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'tinyint_col','tinyint',''
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'smallint_col','smallint',''
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'int_col','int',''
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'bigint_col','bigint',''
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'float_col','float',''
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'double_col','double',''
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'date_string_col','string',''
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'string_col','string',''
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'timestamp_col','timestamp',''
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'year','int',''
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'month','int',''
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---- TYPES
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string, string, string
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====
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---- QUERY
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# Test printing of complex types.
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describe functional.allcomplextypes
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---- RESULTS
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'id','int',''
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'int_array_col','array<int>',''
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'array_array_col','array<array<int>>',''
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'map_array_col','array<map<string,int>>',''
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'struct_array_col','array<struct<\n f1:bigint,\n f2:string\n>>',''
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'int_map_col','map<string,int>',''
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'array_map_col','map<string,array<int>>',''
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'map_map_col','map<string,map<string,int>>',''
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'struct_map_col','map<string,struct<\n f1:bigint,\n f2:string\n>>',''
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'int_struct_col','struct<\n f1:int,\n f2:int\n>',''
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'complex_struct_col','struct<\n f1:int,\n f2:array<int>,\n f3:map<string,int>\n>',''
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'nested_struct_col','struct<\n f1:int,\n f2:struct<\n f11:bigint,\n f12:struct<\n f21:bigint\n >\n >\n>',''
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'complex_nested_struct_col','struct<\n f1:int,\n f2:array<struct<\n f11:bigint,\n f12:map<string,struct<\n f21:bigint\n >>\n >>\n>',''
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'year','int',''
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'month','int',''
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---- TYPES
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string, string, string
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====
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---- QUERY
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describe functional_parquet.allcomplextypes.int_array_col
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---- RESULTS
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'item','int',''
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'pos','bigint',''
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---- TYPES
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string,string,string
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====
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---- QUERY
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describe functional_parquet.allcomplextypes.map_array_col.item
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---- RESULTS
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'key','string',''
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'value','int',''
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---- TYPES
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string,string,string
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====
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---- QUERY
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describe functional_parquet.allcomplextypes.complex_struct_col
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---- RESULTS
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'f1','int',''
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'f2','array<int>',''
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'f3','map<string,int>',''
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---- TYPES
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string,string,string
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====
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---- QUERY
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describe functional_parquet.allcomplextypes.complex_struct_col.f2
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---- RESULTS
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'item','int',''
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'pos','bigint',''
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---- TYPES
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string,string,string
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====
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---- QUERY
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use functional_parquet
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====
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---- QUERY
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describe functional_parquet.allcomplextypes.complex_struct_col.f2
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---- RESULTS
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'item','int',''
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'pos','bigint',''
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---- TYPES
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string,string,string
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====
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---- QUERY
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use functional_parquet
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====
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---- QUERY
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# Check that paths relative to current database work ok.
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describe allcomplextypes.int_array_col
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---- RESULTS
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'item','int',''
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'pos','bigint',''
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---- TYPES
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string,string,string
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====
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---- QUERY
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# Pretty-printing should work for fields too.
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describe allcomplextypes.nested_struct_col
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---- RESULTS
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'f1','int',''
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'f2','struct<\n f11:bigint,\n f12:struct<\n f21:bigint\n >\n>',''
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---- TYPES
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string,string,string
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====
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