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# sqlglot.dialects.databricks

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     1from __future__ import annotations
     2
     3from sqlglot import exp, transforms
     4from sqlglot.dialects.dialect import parse_date_delta
     5from sqlglot.dialects.spark import Spark
     6from sqlglot.dialects.tsql import generate_date_delta_with_unit_sql
     7from sqlglot.tokens import TokenType
     8
     9
    10class Databricks(Spark):
    11    class Parser(Spark.Parser):
    12        LOG_DEFAULTS_TO_LN = True
    13
    14        FUNCTIONS = {
    15            **Spark.Parser.FUNCTIONS,
    16            "DATEADD": parse_date_delta(exp.DateAdd),
    17            "DATE_ADD": parse_date_delta(exp.DateAdd),
    18            "DATEDIFF": parse_date_delta(exp.DateDiff),
    19        }
    20
    21        FACTOR = {
    22            **Spark.Parser.FACTOR,
    23            TokenType.COLON: exp.JSONExtract,
    24        }
    25
    26    class Generator(Spark.Generator):
    27        TRANSFORMS = {
    28            **Spark.Generator.TRANSFORMS,  # type: ignore
    29            exp.DateAdd: generate_date_delta_with_unit_sql,
    30            exp.DateDiff: generate_date_delta_with_unit_sql,
    31            exp.JSONExtract: lambda self, e: self.binary(e, ":"),
    32            exp.Select: transforms.preprocess(
    33                [
    34                    transforms.eliminate_distinct_on,
    35                    transforms.unnest_to_explode,
    36                ]
    37            ),
    38            exp.ToChar: lambda self, e: self.function_fallback_sql(e),
    39        }
    40
    41        PARAMETER_TOKEN = "$"
    42
    43    class Tokenizer(Spark.Tokenizer):
    44        SINGLE_TOKENS = {
    45            **Spark.Tokenizer.SINGLE_TOKENS,
    46            "$": TokenType.PARAMETER,
    47        }

class Databricks(sqlglot.dialects.spark.Spark): View Source

    11class Databricks(Spark):
    12    class Parser(Spark.Parser):
    13        LOG_DEFAULTS_TO_LN = True
    14
    15        FUNCTIONS = {
    16            **Spark.Parser.FUNCTIONS,
    17            "DATEADD": parse_date_delta(exp.DateAdd),
    18            "DATE_ADD": parse_date_delta(exp.DateAdd),
    19            "DATEDIFF": parse_date_delta(exp.DateDiff),
    20        }
    21
    22        FACTOR = {
    23            **Spark.Parser.FACTOR,
    24            TokenType.COLON: exp.JSONExtract,
    25        }
    26
    27    class Generator(Spark.Generator):
    28        TRANSFORMS = {
    29            **Spark.Generator.TRANSFORMS,  # type: ignore
    30            exp.DateAdd: generate_date_delta_with_unit_sql,
    31            exp.DateDiff: generate_date_delta_with_unit_sql,
    32            exp.JSONExtract: lambda self, e: self.binary(e, ":"),
    33            exp.Select: transforms.preprocess(
    34                [
    35                    transforms.eliminate_distinct_on,
    36                    transforms.unnest_to_explode,
    37                ]
    38            ),
    39            exp.ToChar: lambda self, e: self.function_fallback_sql(e),
    40        }
    41
    42        PARAMETER_TOKEN = "$"
    43
    44    class Tokenizer(Spark.Tokenizer):
    45        SINGLE_TOKENS = {
    46            **Spark.Tokenizer.SINGLE_TOKENS,
    47            "$": TokenType.PARAMETER,
    48        }

##### Inherited Members

sqlglot.dialects.dialect.Dialect
  get_or_raise
  format_time
  parse
  parse_into
  generate
  transpile
  tokenize
  parser
  generator

class Databricks.Parser(sqlglot.dialects.spark.Spark.Parser): View Source

    12    class Parser(Spark.Parser):
    13        LOG_DEFAULTS_TO_LN = True
    14
    15        FUNCTIONS = {
    16            **Spark.Parser.FUNCTIONS,
    17            "DATEADD": parse_date_delta(exp.DateAdd),
    18            "DATE_ADD": parse_date_delta(exp.DateAdd),
    19            "DATEDIFF": parse_date_delta(exp.DateDiff),
    20        }
    21
    22        FACTOR = {
    23            **Spark.Parser.FACTOR,
    24            TokenType.COLON: exp.JSONExtract,
    25        }

Parser consumes a list of tokens produced by the `sqlglot.tokens.Tokenizer` and produces a parsed syntax tree.

###### Arguments:

- error_level: the desired error level. Default: ErrorLevel.RAISE
- error_message_context: determines the amount of context to capture from a query string when displaying the error message (in number of characters). Default: 50.
- index_offset: Index offset for arrays eg ARRAY[0] vs ARRAY[1] as the head of a list. Default: 0
- alias_post_tablesample: If the table alias comes after tablesample. Default: False
- max_errors: Maximum number of error messages to include in a raised ParseError. This is only relevant if error_level is ErrorLevel.RAISE. Default: 3
- null_ordering: Indicates the default null ordering method to use if not explicitly set. Options are "nulls_are_small", "nulls_are_large", "nulls_are_last". Default: "nulls_are_small"

##### Inherited Members

sqlglot.parser.Parser
  Parser
  reset
  parse
  parse_into
  check_errors
  raise_error
  expression
  validate_expression

class Databricks.Generator(sqlglot.dialects.spark.Spark.Generator): View Source

    27    class Generator(Spark.Generator):
    28        TRANSFORMS = {
    29            **Spark.Generator.TRANSFORMS,  # type: ignore
    30            exp.DateAdd: generate_date_delta_with_unit_sql,
    31            exp.DateDiff: generate_date_delta_with_unit_sql,
    32            exp.JSONExtract: lambda self, e: self.binary(e, ":"),
    33            exp.Select: transforms.preprocess(
    34                [
    35                    transforms.eliminate_distinct_on,
    36                    transforms.unnest_to_explode,
    37                ]
    38            ),
    39            exp.ToChar: lambda self, e: self.function_fallback_sql(e),
    40        }
    41
    42        PARAMETER_TOKEN = "$"

Generator interprets the given syntax tree and produces a SQL string as an output.

###### Arguments:

- time_mapping (dict): the dictionary of custom time mappings in which the key represents a python time format and the output the target time format
- time_trie (trie): a trie of the time_mapping keys
- pretty (bool): if set to True the returned string will be formatted. Default: False.
- quote_start (str): specifies which starting character to use to delimit quotes. Default: '.
- quote_end (str): specifies which ending character to use to delimit quotes. Default: '.
- identifier_start (str): specifies which starting character to use to delimit identifiers. Default: ".
- identifier_end (str): specifies which ending character to use to delimit identifiers. Default: ".
- identify (bool | str): 'always': always quote, 'safe': quote identifiers if they don't contain an upcase, True defaults to always.
- normalize (bool): if set to True all identifiers will lower cased
- string_escape (str): specifies a string escape character. Default: '.
- identifier_escape (str): specifies an identifier escape character. Default: ".
- pad (int): determines padding in a formatted string. Default: 2.
- indent (int): determines the size of indentation in a formatted string. Default: 4.
- unnest_column_only (bool): if true unnest table aliases are considered only as column aliases
- normalize_functions (str): normalize function names, "upper", "lower", or None Default: "upper"
- alias_post_tablesample (bool): if the table alias comes after tablesample Default: False
- unsupported_level (ErrorLevel): determines the generator's behavior when it encounters unsupported expressions. Default ErrorLevel.WARN.
- null_ordering (str): Indicates the default null ordering method to use if not explicitly set. Options are "nulls_are_small", "nulls_are_large", "nulls_are_last". Default: "nulls_are_small"
- max_unsupported (int): Maximum number of unsupported messages to include in a raised UnsupportedError. This is only relevant if unsupported_level is ErrorLevel.RAISE. Default: 3
- leading_comma (bool): if the the comma is leading or trailing in select statements Default: False
- max_text_width: The max number of characters in a segment before creating new lines in pretty mode. The default is on the smaller end because the length only represents a segment and not the true line length. Default: 80
- comments: Whether or not to preserve comments in the output SQL code. Default: True

##### Inherited Members

sqlglot.generator.Generator
  Generator
  generate
  unsupported
  sep
  seg
  pad_comment
  maybe_comment
  wrap
  no_identify
  normalize_func
  indent
  sql
  uncache_sql
  cache_sql
  characterset_sql
  column_sql
  columnposition_sql
  columndef_sql
  columnconstraint_sql
  autoincrementcolumnconstraint_sql
  compresscolumnconstraint_sql
  generatedasidentitycolumnconstraint_sql
  notnullcolumnconstraint_sql
  primarykeycolumnconstraint_sql
  uniquecolumnconstraint_sql
  create_sql
  describe_sql
  prepend_ctes
  with_sql
  cte_sql
  tablealias_sql
  bitstring_sql
  hexstring_sql
  bytestring_sql
  directory_sql
  delete_sql
  drop_sql
  except_sql
  except_op
  fetch_sql
  filter_sql
  hint_sql
  index_sql
  identifier_sql
  inputoutputformat_sql
  national_sql
  partition_sql
  properties_sql
  root_properties
  properties
  locate_properties
  property_sql
  likeproperty_sql
  fallbackproperty_sql
  journalproperty_sql
  freespaceproperty_sql
  afterjournalproperty_sql
  checksumproperty_sql
  mergeblockratioproperty_sql
  datablocksizeproperty_sql
  blockcompressionproperty_sql
  isolatedloadingproperty_sql
  lockingproperty_sql
  withdataproperty_sql
  insert_sql
  intersect_sql
  intersect_op
  introducer_sql
  pseudotype_sql
  onconflict_sql
  returning_sql
  rowformatdelimitedproperty_sql
  table_sql
  tablesample_sql
  pivot_sql
  tuple_sql
  update_sql
  values_sql
  var_sql
  into_sql
  from_sql
  group_sql
  having_sql
  join_sql
  lambda_sql
  lateral_sql
  limit_sql
  offset_sql
  setitem_sql
  set_sql
  pragma_sql
  lock_sql
  literal_sql
  loaddata_sql
  null_sql
  boolean_sql
  order_sql
  cluster_sql
  distribute_sql
  sort_sql
  ordered_sql
  matchrecognize_sql
  query_modifiers
  select_sql
  schema_sql
  star_sql
  structkwarg_sql
  parameter_sql
  sessionparameter_sql
  placeholder_sql
  subquery_sql
  qualify_sql
  union_sql
  union_op
  unnest_sql
  where_sql
  window_sql
  partition_by_sql
  windowspec_sql
  withingroup_sql
  between_sql
  bracket_sql
  all_sql
  any_sql
  exists_sql
  case_sql
  constraint_sql
  nextvaluefor_sql
  extract_sql
  trim_sql
  concat_sql
  check_sql
  foreignkey_sql
  primarykey_sql
  unique_sql
  if_sql
  matchagainst_sql
  jsonkeyvalue_sql
  jsonobject_sql
  in_sql
  in_unnest_op
  interval_sql
  return_sql
  reference_sql
  anonymous_sql
  paren_sql
  neg_sql
  not_sql
  alias_sql
  aliases_sql
  attimezone_sql
  add_sql
  and_sql
  connector_sql
  bitwiseand_sql
  bitwiseleftshift_sql
  bitwisenot_sql
  bitwiseor_sql
  bitwiserightshift_sql
  bitwisexor_sql
  currentdate_sql
  collate_sql
  command_sql
  comment_sql
  transaction_sql
  commit_sql
  rollback_sql
  altercolumn_sql
  renametable_sql
  altertable_sql
  droppartition_sql
  addconstraint_sql
  distinct_sql
  ignorenulls_sql
  respectnulls_sql
  intdiv_sql
  dpipe_sql
  div_sql
  overlaps_sql
  distance_sql
  dot_sql
  eq_sql
  escape_sql
  glob_sql
  gt_sql
  gte_sql
  ilike_sql
  ilikeany_sql
  is_sql
  like_sql
  likeany_sql
  similarto_sql
  lt_sql
  lte_sql
  mod_sql
  mul_sql
  neq_sql
  nullsafeeq_sql
  nullsafeneq_sql
  or_sql
  slice_sql
  sub_sql
  trycast_sql
  use_sql
  binary
  function_fallback_sql
  func
  format_args
  text_width
  format_time
  expressions
  op_expressions
  naked_property
  set_operation
  tag_sql
  token_sql
  userdefinedfunction_sql
  joinhint_sql
  kwarg_sql
  when_sql
  merge_sql
  tochar_sql
sqlglot.dialects.spark.Spark.Generator
  datediff_sql
sqlglot.dialects.spark2.Spark2.Generator
  cast_sql
sqlglot.dialects.hive.Hive.Generator
  arrayagg_sql
  with_properties
  datatype_sql

class Databricks.Tokenizer(sqlglot.dialects.spark2.Spark2.Tokenizer): View Source

    44    class Tokenizer(Spark.Tokenizer):
    45        SINGLE_TOKENS = {
    46            **Spark.Tokenizer.SINGLE_TOKENS,
    47            "$": TokenType.PARAMETER,
    48        }

##### Inherited Members

sqlglot.tokens.Tokenizer
  reset
  tokenize