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snowflake-arp.yaml
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#
# Copyright (C) 2017-2019 Dremio Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
metadata:
# Manually Configured Metadata Section.
name: SNOWFLAKE
apiname: snowflake
spec_version: '2'
syntax:
# Manually Configured Syntax Section.
identifier_quote: '"' #https://docs.snowflake.net/manuals/sql-reference/identifiers-syntax.html#double-quoted-identifiers
identifier_length_limit: 256 #https://docs.snowflake.net/manuals/sql-reference/identifiers.html#object-identifiers
allows_boolean_literal: false
map_boolean_literal_to_bit: false
supports_catalogs: true
supports_schemas: true
# https://docs.snowflake.net/manuals/sql-reference/intro-summary-data-types.html
data_types:
mappings:
#------------Boolean types--------------#
- source:
name: "BOOLEAN"
dremio:
name: "boolean"
#------------Numeric types--------------#
- source:
name: "NUMERIC"
max_precision: 38
max_scale: 37
required_cast_args: "precision_scale"
dremio:
name: "DECIMAL"
- source:
name: "NUMBER"
max_precision: 38
max_scale: 37
dremio:
name: "DECIMAL"
- source:
name: "DECIMAL"
max_precision: 38
max_scale: 37
required_cast_args: "precision_scale"
dremio:
name: "DECIMAL"
- source:
name: "INT"
dremio:
name: "integer"
- source:
name: "INTEGER"
dremio:
name: "integer"
- source:
name: "SMALLINT"
dremio:
name: "integer"
- source:
name: "BIGINT"
dremio:
name: "bigint"
- source:
name: "FLOAT"
dremio:
name: "double"
- source:
name: "FLOAT4"
dremio:
name: "double"
- source:
name: "FLOAT8"
dremio:
name: "double"
- source:
name: "DOUBLE"
dremio:
name: "double"
- source:
name: "DOUBLE PRECISION"
dremio:
name: "double"
#------------String types--------------#
- source:
name: "VARCHAR"
max_precision: 16777216
literal_length_limit: 16777216
required_cast_args: "precision"
dremio:
name: "varchar"
- source:
name: "CHAR"
max_precision: 1
literal_length_limit: 1
dremio:
name: "varchar"
- source:
name: "CHARACTER"
max_precision: 1
literal_length_limit: 1
dremio:
name: "varchar"
- source:
name: "STRING"
dremio:
name: "varchar"
#------------Binary--------------#
# https://docs.snowflake.net/manuals/sql-reference/data-types-text.html#binary
- source:
name: "binary"
max_precision: 8388608
literal_length_limit: 8388608
required_cast_args: "precision"
dremio:
name: "varbinary"
#------------Date types--------------#
- source:
name: "DATE"
dremio:
name: "date"
- source:
name: "TIME"
dremio:
name: "time"
- source:
name: "TIMESTAMP"
dremio:
name: "timestamp"
- source:
name: "TIMESTAMP_LTZ"
dremio:
name: "timestamp"
- source:
name: "TIMESTAMP_NTZ"
dremio:
name: "timestamp"
- source:
name: "TIMESTAMP_TZ"
dremio:
name: "timestamp"
- source:
name: "TIMESTAMPLTZ"
dremio:
name: "timestamp"
- source:
name: "TIMESTAMPNTZ"
dremio:
name: "timestamp"
- source:
name: "TIMESTAMPTZ"
dremio:
name: "timestamp"
#------------ Snowflake's complex VARIANT type (JSON) is mapped to Dremio's VARCHAR. -------------#
#------------ You can use convert_from(<field>, 'JSON') in Dremio to treat it as a JSON -------------#
- source:
name: "VARIANT"
dremio:
name: "VARCHAR"
relational_algebra:
aggregation:
enable: true
group_by_ordinal: false
distinct: true
count_functions:
count_star:
enable: true
count:
enable: true
count_distinct:
enable: true
# https://docs.snowflake.net/manuals/sql-reference-functions.html
functions:
- names:
- "avg"
signatures:
- args:
- "double"
return: "double"
- args:
- "decimal"
return: "decimal"
- args:
- "integer"
return: "double"
- names:
- "max"
- "min"
signatures:
- args:
- "integer"
return: "integer"
- args:
- "double"
return: "double"
- args:
- "decimal"
return: "decimal"
- args:
- "varchar"
return: "varchar"
- names:
- "sum"
signatures:
- args:
- "double"
return: "double"
- args:
- "decimal"
return: "decimal"
- args:
- "integer"
return: "bigint"
- names:
- "stddev"
- "stddev_pop"
- "stddev_samp"
- "var_pop"
- "var_samp"
signatures:
- args:
- "bigint"
return: "double"
- args:
- "double"
return: "double"
- args:
- "float"
return: "double"
- args:
- "integer"
return: "double"
- args:
- "decimal"
return: "decimal"
except:
enable: false
project:
enable: true
join:
enable: true
cross:
enable: true
rewrite: "{0}, {1}"
inner:
enable: true
inequality: true
left:
enable: true
inequality: true
right:
enable: true
inequality: true
full:
enable: true
inequality: true
sort:
enable: true
order_by:
enable: true
default_nulls_ordering: high
fetch_offset: # https://docs.snowflake.net/manuals/sql-reference/constructs/limit.html#limit-fetch
offset_fetch:
enable: true
format: 'LIMIT {1} OFFSET {0}'
offset_only:
enable: false
fetch_only:
enable: true
format: 'LIMIT {0}'
# https://docs.snowflake.net/manuals/sql-reference/operators-query.html#union-all
union:
enable: true
union_all:
enable: true
values:
enable: false
method: values
# Describe the set of function signatures that are internally supported.
expressions:
subqueries:
enable: true
correlated: true
scalar: true
in_clause: true
supports_case: true
supports_over: true
datetime_formats: #https://docs.snowflake.net/manuals/sql-reference/data-types-datetime.html#date-and-time-formats
meridian:
enable: true
format: "AM"
day_of_week:
enable: true
format: "D"
day_name_abbreviated:
enable: true
format: "DY"
day_name:
enable: true
format: "Day"
year_4:
enable: true
format: "YYYY"
year_2:
enable: true
format: "YY"
month:
enable: true
format: "MM"
month_name_abbreviated:
enable: true
format: "Mon"
month_name:
enable: true
format: "Month"
day_of_month:
enable: true
format: "DD"
hour_12:
enable: true
format: "HH12"
hour_24:
enable: true
format: "HH24"
minute:
enable: true
format: "MI"
second:
enable: true
format: "SS"
timezone_abbreviation:
enable: true
format: "TZ"
operators:
- names:
- "cast"
signatures:
- args:
- "varchar"
return: "integer"
rewrite: "CAST(TRUNC(CAST({0} AS DECIMAL), 0) AS INTEGER)"
- args:
- "varchar"
return: "bigint"
rewrite: "CAST(TRUNC(CAST({0} AS DECIMAL), 0) AS BIGINT)"
- names:
- "trim" #https://docs.snowflake.net/manuals/sql-reference/functions/trim.html
signatures:
- args:
- "varchar"
return: "varchar"
- names: #https://docs.snowflake.net/manuals/sql-reference/functions/ltrim.html
- "ltrim"
signatures:
- args:
- "varchar"
return: "varchar"
- names: #https://docs.snowflake.net/manuals/sql-reference/functions/rtrim.html
- "rtrim"
signatures:
- args:
- "varchar"
return: "varchar"
- names: #https://docs.snowflake.net/manuals/sql-reference/functions/sign.html
- "sign"
signatures:
- args:
- "bigint"
return: "integer"
- args:
- "double"
return: "integer"
- args:
- "decimal"
return: "integer"
- args:
- "float"
return: "integer"
- args:
- "integer"
return: "integer"
- names:
- "floor" #https://docs.snowflake.net/manuals/sql-reference/functions/floor.html.
signatures:
- args:
- "bigint"
return: "bigint"
- args:
- "double"
return: "double"
- args:
- "decimal"
return: "decimal"
- args:
- "float"
return: "float"
- args:
- "integer"
return: "integer"
- names: #https://docs.snowflake.net/manuals/sql-reference/functions/position.html
- "position"
- "locate"
signatures:
- args:
- "varchar"
- "varchar"
return: "integer"
rewrite: "POSITION({0}, {1})"
- args:
- "varchar"
- "varchar"
- "integer"
return: "integer"
rewrite: "POSITION({0}, {1}, {2})"
- names:
- "pi"
signatures:
- args: []
return: "double"
- names:
- "truncate"
signatures:
- args:
- "double"
- "integer"
return: "double"
rewrite: "TRUNC({0}, {1})"
- args:
- "decimal"
- "integer"
return: "decimal"
rewrite: "TRUNC({0}, {1})"
- args:
- "float"
- "integer"
return: "float"
rewrite: "TRUNC({0}, {1})"
- args:
- "bigint"
- "integer"
return: "bigint"
rewrite: "TRUNC({0}, {1})"
- args:
- "integer"
- "integer"
return: "integer"
rewrite: "TRUNC({0}, {1})"
- args:
- "double"
return: "double"
rewrite: "TRUNC({0})"
- args:
- "decimal"
return: "decimal"
rewrite: "TRUNC({0})"
- args:
- "float"
return: "float"
rewrite: "TRUNC({0})"
- args:
- "integer"
return: "integer"
rewrite: "TRUNC({0})"
- args:
- "bigint"
return: "bigint"
rewrite: "TRUNC({0})"
- names:
- "reverse"
signatures:
- args:
- "varchar"
return: "varchar"
- names:
- "rpad" #https://docs.snowflake.net/manuals/sql-reference/functions/rpad.html
signatures:
- args:
- "varchar"
- "integer"
- "varchar"
return: "varchar"
- args:
- "varchar"
- "bigint"
- "varchar"
return: "varchar"
- names:
- "lpad" #https://docs.snowflake.net/manuals/sql-reference/functions/lpad.html
signatures:
- args:
- "varchar"
- "integer"
- "varchar"
return: "varchar"
- args:
- "varchar"
- "bigint"
- "varchar"
return: "varchar"
- names:
- "length" #https://docs.snowflake.net/manuals/sql-reference/functions/length.html
signatures:
- args:
- "varchar"
return: "integer"
- names:
- "lower" #https://docs.snowflake.net/manuals/sql-reference/functions/lower.html
signatures:
- args:
- "varchar"
return: "varchar"
- names:
- "regexp_like" #https://docs.snowflake.net/manuals/sql-reference/functions/regexp_like.html
signatures:
- args:
- "varchar"
- "varchar"
return: "boolean"
- names:
- "replace" #https://docs.snowflake.net/manuals/sql-reference/functions/replace.html
signatures:
- args:
- "varchar"
- "varchar"
- "varchar"
return: "varchar"
- names:
- "upper" #https://docs.snowflake.net/manuals/sql-reference/functions/upper.html
signatures:
- args:
- "varchar"
return: "varchar"
- names:
- "timestampdiff_day" #https://docs.snowflake.net/manuals/sql-reference/functions/timestampdiff.html
signatures:
- args:
- "timestamp"
- "timestamp"
return: "integer"
- args:
- "time"
- "time"
return: "integer"
- args:
- "date"
- "date"
return: "integer"
- args:
- "timestamp"
- "date"
return: "integer"
- args:
- "timestamp"
- "time"
return: "integer"
- args:
- "time"
- "timestamp"
return: "integer"
- args:
- "time"
- "date"
return: "integer"
- args:
- "date"
- "time"
return: "integer"
- args:
- "date"
- "timestamp"
return: "integer"
- names:
- "timestampdiff_hour" #https://docs.snowflake.net/manuals/sql-reference/functions/timestampdiff.html
signatures:
- args:
- "timestamp"
- "timestamp"
return: "integer"
- args:
- "time"
- "time"
return: "integer"
- args:
- "date"
- "date"
return: "integer"
- args:
- "timestamp"
- "date"
return: "integer"
- args:
- "timestamp"
- "time"
return: "integer"
- args:
- "time"
- "timestamp"
return: "integer"
- args:
- "time"
- "date"
return: "integer"
- args:
- "date"
- "time"
return: "integer"
- args:
- "date"
- "timestamp"
return: "integer"
- names:
- "timestampdiff_minute" #https://docs.snowflake.net/manuals/sql-reference/functions/timestampdiff.html
signatures:
- args:
- "timestamp"
- "timestamp"
return: "integer"
- args:
- "time"
- "time"
return: "integer"
- args:
- "date"
- "date"
return: "integer"
- args:
- "timestamp"
- "date"
return: "integer"
- args:
- "timestamp"
- "time"
return: "integer"
- args:
- "time"
- "timestamp"
return: "integer"
- args:
- "time"
- "date"
return: "integer"
- args:
- "date"
- "time"
return: "integer"
- args:
- "date"
- "timestamp"
return: "integer"
- names:
- "timestampdiff_month" #https://docs.snowflake.net/manuals/sql-reference/functions/timestampdiff.html
signatures:
- args:
- "timestamp"
- "timestamp"
return: "integer"
- args:
- "time"
- "time"
return: "integer"
- args:
- "date"
- "date"
return: "integer"
- args:
- "timestamp"
- "date"
return: "integer"
- args:
- "timestamp"
- "time"
return: "integer"
- args:
- "time"
- "timestamp"
return: "integer"
- args:
- "time"
- "date"
return: "integer"
- args:
- "date"
- "time"
return: "integer"
- args:
- "date"
- "timestamp"
return: "integer"
- names:
- "timestampdiff_second" #https://docs.snowflake.net/manuals/sql-reference/functions/timestampdiff.html
signatures:
- args:
- "timestamp"
- "timestamp"
return: "integer"
- args:
- "time"
- "time"
return: "integer"
- args:
- "date"
- "date"
return: "integer"
- args:
- "timestamp"
- "date"
return: "integer"
- args:
- "timestamp"
- "time"
return: "integer"
- args:
- "time"
- "timestamp"
return: "integer"
- args:
- "time"
- "date"
return: "integer"
- args:
- "date"
- "time"
return: "integer"
- args:
- "date"
- "timestamp"
return: "integer"
- names:
- "timestampdiff_week" # https://docs.snowflake.com/en/sql-reference/functions/timestampdiff.html
signatures:
- args:
- "timestamp"
- "timestamp"
return: "integer"
- args:
- "time"
- "time"
return: "integer"
- args:
- "date"
- "date"
return: "integer"
- args:
- "timestamp"
- "date"
return: "integer"
- args:
- "timestamp"
- "time"
return: "integer"
- args:
- "time"
- "timestamp"
return: "integer"
- args:
- "time"
- "date"
return: "integer"
- args:
- "date"
- "time"
return: "integer"
- args:
- "date"
- "timestamp"
return: "integer"
- names:
- "timestampdiff_year" #https://docs.snowflake.net/manuals/sql-reference/functions/timestampdiff.html
signatures:
- args:
- "timestamp"
- "timestamp"
return: "integer"
- args:
- "time"
- "time"
return: "integer"
- args:
- "date"
- "date"
return: "integer"
- args:
- "timestamp"
- "date"
return: "integer"
- args:
- "timestamp"
- "time"
return: "integer"
- args:
- "time"
- "timestamp"
return: "integer"
- args:
- "time"
- "date"
return: "integer"
- args:
- "date"
- "time"
return: "integer"
- args:
- "date"
- "timestamp"
return: "integer"
- names: #https://docs.snowflake.net/manuals/sql-reference/functions/substr.html
- "substring"
signatures:
- args:
- "varchar"
- "integer"
- "integer"
return: "varchar"
rewrite: "substring({0},{1},{2})"
- args:
- "varchar"
- "integer"
return: "varchar"
rewrite: "substring({0},{1})"
- names:
- "substr"
signatures:
- args:
- "varchar"
- "integer"
- "integer"
return: "varchar"
rewrite: "substring({0},{1},{2})"
- args:
- "varchar"
- "integer"
return: "varchar"
rewrite: "substring({0},{1})"
# Snowlake supports both EXTRACT (type from field) and YEAR/MONTH/DAY/SECOND etc..
# https://docs.snowflake.net/manuals/sql-reference/functions/date_part.html
- names:
- extract_year
signatures:
- return: bigint
args:
- date
rewrite: "YEAR({0})"
- return: bigint
args:
- timestamp
rewrite: "YEAR({0})"
- return: bigint
args:
- time
rewrite: "YEAR({0})"
- names:
- extract_month
signatures:
- return: bigint
args:
- date
rewrite: "MONTH({0})"
- return: bigint
args:
- timestamp
rewrite: "MONTH({0})"
- return: bigint
args:
- time
rewrite: "MONTH({0})"
- names:
- extract_day
signatures:
- return: bigint
args:
- date
rewrite: "DAY({0})"
- return: bigint
args:
- timestamp
rewrite: "DAY({0})"
- return: bigint
args:
- time
rewrite: "DAY({0})"
- names:
- extract_hour
signatures:
- return: bigint
args:
- date
rewrite: "HOUR({0})"
- return: bigint
args:
- timestamp
rewrite: "HOUR({0})"
- return: bigint
args:
- time
rewrite: "HOUR({0})"
- names:
- extract_minute
signatures:
- return: bigint
args:
- date
rewrite: "MINUTE({0})"
- return: bigint
args:
- timestamp
rewrite: "MINUTE({0})"
- return: bigint
args:
- time
rewrite: "MINUTE({0})"
- names:
- extract_second
signatures:
- return: bigint
args:
- date
rewrite: "SECOND({0})"
- return: bigint
args:
- timestamp
rewrite: "SECOND({0})"
- return: bigint
args:
- time
rewrite: "SECOND({0})"
- names:
- extract_dow
signatures:
- return: bigint
args:
- date
rewrite: "DAYOFWEEK({0})"
- return: bigint
args:
- timestamp
rewrite: "DAYOFWEEK({0})"
- return: bigint
args:
- time
rewrite: "DAYOFWEEK({0})"
- names:
- extract_doy
signatures:
- return: bigint
args:
- date
rewrite: "DAYOFYEAR({0})"
- return: bigint
args:
- timestamp
rewrite: "DAYOFYEAR({0})"
- return: bigint
args:
- time
rewrite: "DAYOFYEAR({0})"
- names:
- extract_quarter
signatures:
- return: bigint
args:
- date
rewrite: "QUARTER({0})"
- return: bigint
args:
- timestamp
rewrite: "QUARTER({0})"
- return: bigint
args:
- time
rewrite: "QUARTER({0})"
- names:
- extract_week