====
---- QUERY
# Tests explaining a query (TPCDS-Q19)
explain
select
  i_brand_id,
  i_brand,
  i_manufact_id,
  i_manufact,
  sum(ss_ext_sales_price) ext_price
from
  tpcds.store_sales
  join tpcds.item on (store_sales.ss_item_sk = item.i_item_sk)
  join tpcds.customer on (store_sales.ss_customer_sk = customer.c_customer_sk)
  join tpcds.customer_address on (customer.c_current_addr_sk = customer_address.ca_address_sk)
  join tpcds.store on (store_sales.ss_store_sk = store.s_store_sk)
where
  ss_date between '1999-11-01' and '1999-11-30'
  and i_manager_id = 7
  and substr(ca_zip, 1, 5) <> substr(s_zip, 1, 5)
group by
  i_brand,
  i_brand_id,
  i_manufact_id,
  i_manufact
order by
  ext_price desc,
  i_brand,
  i_brand_id,
  i_manufact_id,
  i_manufact
limit 100
---- RESULTS
'Estimated Per-Host Requirements: Memory=72.66MB VCores=5'
''
'19:TOP-N [LIMIT=100]'
'|  order by: sum(ss_ext_sales_price) DESC, i_brand ASC, i_brand_id ASC, i_manufact_id ASC, i_manufact ASC'
'|'
'18:EXCHANGE [UNPARTITIONED]'
'|'
'10:TOP-N [LIMIT=100]'
'|  order by: sum(ss_ext_sales_price) DESC, i_brand ASC, i_brand_id ASC, i_manufact_id ASC, i_manufact ASC'
'|'
'17:AGGREGATE [MERGE FINALIZE]'
'|  output: sum(sum(ss_ext_sales_price))'
'|  group by: i_brand, i_brand_id, i_manufact_id, i_manufact'
'|'
'16:EXCHANGE [HASH(i_brand,i_brand_id,i_manufact_id,i_manufact)]'
'|'
'09:AGGREGATE'
'|  output: sum(ss_ext_sales_price)'
'|  group by: i_brand, i_brand_id, i_manufact_id, i_manufact'
'|'
'08:HASH JOIN [INNER JOIN, BROADCAST]'
'|  hash predicates: store_sales.ss_store_sk = store.s_store_sk'
'|  other predicates: substr(ca_zip, 1, 5) != substr(s_zip, 1, 5)'
'|'
'|--15:EXCHANGE [BROADCAST]'
'|  |'
'|  04:SCAN HDFS [tpcds.store]'
'|     partitions=1/1 size=3.08KB'
'|'
'07:HASH JOIN [INNER JOIN, BROADCAST]'
'|  hash predicates: store_sales.ss_item_sk = item.i_item_sk'
'|'
'|--14:EXCHANGE [BROADCAST]'
'|  |'
'|  01:SCAN HDFS [tpcds.item]'
'|     partitions=1/1 size=4.82MB'
'|     predicates: i_manager_id = 7'
'|'
'06:HASH JOIN [INNER JOIN, BROADCAST]'
'|  hash predicates: customer.c_customer_sk = store_sales.ss_customer_sk'
'|'
'|--13:EXCHANGE [BROADCAST]'
'|  |'
'|  00:SCAN HDFS [tpcds.store_sales]'
'|     partitions=2/120 size=663.52KB'
'|'
'05:HASH JOIN [INNER JOIN, PARTITIONED]'
'|  hash predicates: customer_address.ca_address_sk = customer.c_current_addr_sk'
'|'
'|--12:EXCHANGE [HASH(customer.c_current_addr_sk)]'
'|  |'
'|  02:SCAN HDFS [tpcds.customer]'
'|     partitions=1/1 size=12.60MB'
'|'
'11:EXCHANGE [HASH(customer_address.ca_address_sk)]'
'|'
'03:SCAN HDFS [tpcds.customer_address]'
'   partitions=1/1 size=5.25MB'
====
---- QUERY
# Tests explaining an insert query
explain insert overwrite functional.alltypessmall (id, string_col)
partition (year, month)
select a.id, a.string_col, a.year, a.month from functional.alltypes a
  left semi join functional.alltypesagg b on (a.id = b.id)
where a.year > 2009 and a.month = 4
union distinct
select id, string_col, year, month from functional.alltypes
---- RESULTS
'Estimated Per-Host Requirements: Memory=30.00MB VCores=3'
''
'WRITE TO HDFS [functional.alltypessmall, OVERWRITE=true, PARTITION-KEYS=(year,month)]'
'|  partitions=96'
'|'
'14:EXCHANGE [HASH(year,month)]'
'|'
'13:AGGREGATE [MERGE FINALIZE]'
'|  group by: id, string_col, year, month'
'|'
'12:EXCHANGE [HASH(id,string_col,year,month)]'
'|'
'|--11:AGGREGATE'
'|  |  group by: id, string_col, year, month'
'|  |'
'|  10:MERGE'
'|  |'
'|  04:SCAN HDFS [functional.alltypes]'
'|     partitions=24/24 size=478.45KB'
'|'
'05:AGGREGATE'
'|  group by: id, string_col, year, month'
'|'
'09:MERGE'
'|'
'03:HASH JOIN [LEFT SEMI JOIN, PARTITIONED]'
'|  hash predicates: a.id = b.id'
'|'
'|--07:EXCHANGE [HASH(b.id)]'
'|  |'
'|  02:SCAN HDFS [functional.alltypesagg b]'
'|     partitions=10/10 size=743.67KB'
'|'
'06:EXCHANGE [HASH(a.id)]'
'|'
'01:SCAN HDFS [functional.alltypes a]'
'   partitions=1/24 size=19.71KB'
====
---- QUERY
# Tests explaining an insert query to/from an HBase table
explain insert into functional_hbase.alltypes
select a.* from functional_hbase.alltypessmall a
  cross join functional.alltypessmall b
where a.year > 2009 and a.month = 4
union all
select * from functional_hbase.alltypessmall
---- RESULTS
'Estimated Per-Host Requirements: Memory=1.02GB VCores=3'
''
'WRITE TO HBASE table=functional_hbase.alltypes'
'|'
'06:EXCHANGE [UNPARTITIONED]'
'|'
'|--08:MERGE'
'|  |'
'|  04:SCAN HBASE [functional_hbase.alltypessmall]'
'|'
'07:MERGE'
'|'
'03:CROSS JOIN [BROADCAST]'
'|'
'|--05:EXCHANGE [BROADCAST]'
'|  |'
'|  02:SCAN HDFS [functional.alltypessmall b]'
'|     partitions=4/4 size=6.32KB'
'|'
'01:SCAN HBASE [functional_hbase.alltypessmall a]'
'   predicates: a.year > 2009, a.month = 4'
====
---- QUERY
# Tests explaining an CTAS statement.
explain create table t as
select * from functional.alltypes
where month = 2
---- RESULTS
'Estimated Per-Host Requirements: Memory=16.02MB VCores=1'
''
'WRITE TO HDFS [functional.t, OVERWRITE=false]'
'|  partitions=1'
'|'
'00:SCAN HDFS [functional.alltypes]'
'   partitions=2/24 size=36.51KB'
====
---- QUERY
# Tests the warning about missing table stats in the explain header.
explain select count(t1.int_col), avg(t2.float_col), sum(t3.bigint_col)
from functional_avro.alltypes t1
  inner join functional_parquet.alltypessmall t2 on (t1.id = t2.id)
  left outer join functional_avro.alltypes t3 on (t2.id = t3.id)
where t1.month = 1 and t2.year = 2009 and t3.bool_col = false
---- RESULTS
'Estimated Per-Host Requirements: Memory=4.03GB VCores=3'
'WARNING: The following tables are missing relevant table and/or column statistics.'
'functional_avro.alltypes, functional_parquet.alltypessmall'
''
'09:AGGREGATE [MERGE FINALIZE]'
'|  output: sum(count(t1.int_col)), sum(sum(t2.float_col)), sum(count(t2.float_col)), sum(sum(t3.bigint_col))'
'|'
'08:EXCHANGE [UNPARTITIONED]'
'|'
'05:AGGREGATE'
'|  output: count(t1.int_col), sum(t2.float_col), count(t2.float_col), sum(t3.bigint_col)'
'|'
'04:HASH JOIN [LEFT OUTER JOIN, BROADCAST]'
'|  hash predicates: t2.id = t3.id'
'|  other predicates: t3.bool_col = FALSE'
'|'
'|--07:EXCHANGE [BROADCAST]'
'|  |'
'|  02:SCAN HDFS [functional_avro.alltypes t3]'
'|     partitions=24/24 size=470.35KB'
'|     predicates: t3.bool_col = FALSE'
'|'
'03:HASH JOIN [INNER JOIN, BROADCAST]'
'|  hash predicates: t1.id = t2.id'
'|'
'|--06:EXCHANGE [BROADCAST]'
'|  |'
'|  01:SCAN HDFS [functional_parquet.alltypessmall t2]'
'|     partitions=4/4 size=9.63KB'
'|'
'00:SCAN HDFS [functional_avro.alltypes t1]'
'   partitions=2/24 size=39.87KB'
====