/*

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*/

export type start = multiple_stmt | cmd_stmt | crud_stmt;

export type cmd_stmt = drop_stmt | create_stmt | truncate_stmt | rename_stmt | call_stmt | use_stmt | alter_stmt | set_stmt | lock_stmt | show_stmt;

export type create_stmt = create_table_stmt | create_constraint_trigger | create_extension_stmt | create_index_stmt | create_sequence | create_db_stmt;

export type alter_stmt = alter_table_stmt;

export type crud_stmt = union_stmt | update_stmt | replace_insert_stmt | insert_no_columns_stmt | delete_stmt | cmd_stmt | proc_stmts;

// is in reality: { tableList: any[]; columnList: any[]; ast: T; }

export type AstStatement<T> = T;

export type multiple_stmt = AstStatement<crud_stmt[]>;

export interface union_stmt_node extends select_stmt_node {

_next: union_stmt_node;

union: 'union' | 'union all';

}

export type union_stmt = AstStatement<union_stmt_node>;

export type if_not_exists_stmt = 'IF NOT EXISTS';

export type nameOrLiteral = literal_string | { type: 'same', value: string; };

export type create_extension_stmt = {

type: 'create';

keyword: 'extension';

if_not_exists?: 'if not exists';

extension: nameOrLiteral;

with: 'with';

schema: nameOrLiteral;

version: nameOrLiteral;

from: nameOrLiteral;

};

export type create_db_definition = create_option_character_set[];

export type create_db_stmt = {

type: 'create',

keyword: 'database',

if_not_exists?: 'if not exists',

database: string,

create_definition?: create_db_definition

}

export type create_db_stmt = AstStatement<create_db_stmt>;

export type create_table_stmt_node = create_table_stmt_node_simple | create_table_stmt_node_like;

export interface create_table_stmt_node_base {

type: 'create';

keyword: 'table';

temporary?: 'temporary';

if_not_exists?: 'if not exists';

table: table_ref_list;

}

export interface create_table_stmt_node_simple extends create_table_stmt_node_base{

ignore_replace?: 'ignore' | 'replace';

as?: 'as';

query_expr?: union_stmt_node;

create_definition?: create_table_definition;

table_options?: table_options;

}

export interface create_table_stmt_node_like extends create_table_stmt_node_base{

like: create_like_table;

}

export type create_table_stmt = AstStatement<create_table_stmt_node> | AstStatement<create_table_stmt_node>;;

export type create_sequence_stmt = {

type: 'create',

keyword: 'sequence',

temporary?: 'temporary' | 'temp',

if_not_exists?: 'if not exists',

table: table_ref_list,

create_definition?: create_sequence_definition_list

}

export type create_sequence = AstStatement<create_sequence_stmt>;

export type sequence_definition = { "resource": "sequence", prefix?: string,value: literal | column_ref }

export type sequence_definition_increment = sequence_definition;

export type sequence_definition_minval = sequence_definition;

export type sequence_definition_maxval = sequence_definition;

export type sequence_definition_start = sequence_definition;

export type sequence_definition_cache = sequence_definition;

export type sequence_definition_cycle = sequence_definition;

export type sequence_definition_owned = sequence_definition;

export type create_sequence_definition = sequence_definition_increment | sequence_definition_minval | sequence_definition_maxval | sequence_definition_start | sequence_definition_cache | sequence_definition_cycle | sequence_definition_owned;

export type create_sequence_definition_list = create_sequence_definition[];

export interface create_index_stmt_node {

type: 'create';

index_type?: 'unique';

keyword: 'index';

concurrently?: 'concurrently';

index: string;

on_kw: string;

table: table_name;

index_using?: index_type;

index_columns: column_order[];

with?: index_option[];

with_before_where: true;

tablespace?: {type: 'origin'; value: string; }

where?: where_clause;

}

export type create_index_stmt = AstStatement<create_index_stmt_node>;

export type column_order_list = column_order[];

export type column_order = {

column: expr;

collate: collate_expr;

opclass: ident;

order: 'asc' | 'desc';

nulls: 'nulls last' | 'nulls first';

};

export type create_like_table_simple = { type: 'like'; table: table_ref_list; };

export type create_like_table = create_like_table_simple | create_like_table_simple & { parentheses?: boolean; };

export type create_table_definition = create_definition[];

export type create_definition = create_column_definition | create_index_definition | create_fulltext_spatial_index_definition | create_constraint_definition;

export type column_definition_opt = column_constraint | { auto_increment: 'auto_increment'; } | { unique_or_primary: 'unique' | 'primary key'; } | { comment: keyword_comment; } | { collate: collate_expr; } | { column_format: column_format; } | { storage: storage } | { reference_definition: reference_definition; } | { character_set: collate_expr };

export type column_definition_opt_list = {

nullable?: column_constraint['nullable'];

default_val?: column_constraint['default_val'];

auto_increment?: 'auto_increment';

unique_or_primary?: 'unique' | 'primary key';

comment?: keyword_comment;

collate?: collate_expr;

column_format?: column_format;

storage?: storage;

reference_definition?: reference_definition;

};

export type create_column_definition = {

column: column_ref;

definition: data_type;

nullable: column_constraint['nullable'];

default_val: column_constraint['default_val'];

auto_increment?: 'auto_increment';

unique_or_primary?: 'unique' | 'primary key';

comment?: keyword_comment;

collate?: collate_expr;

column_format?: column_format;

storage?: storage;

reference_definition?: reference_definition;

resource: 'column';

};

export type column_constraint = { nullable: literal_null | literal_not_null; default_val: default_expr; };

export type collate_expr = { type: 'collate'; symbol: '=' | null; value: ident; };

export type column_format = { type: 'column_format'; value: 'fixed' | 'dynamic' | 'default'; };

export type storage = { type: 'storage'; value: 'disk' | 'memory' };

export type default_expr = { type: 'default'; value: literal | expr; };

export type drop_index_opt = (ALTER_ALGORITHM | ALTER_LOCK)[];

export interface drop_stmt_node {

type: 'drop';

keyword: 'table';

name: table_ref_list;

}

export interface drop_index_stmt_node {

type: 'drop';

keyword: string;

name: column_ref;

table: table_name;

options?: drop_index_opt;

}

export type drop_stmt = AstStatement<drop_stmt_node> | AstStatement<drop_index_stmt_node>;

export interface truncate_stmt_node {

type: 'trucate';

keyword: 'table';

name: table_ref_list;

}

export type truncate_stmt = AstStatement<truncate_stmt_node>;

export interface use_stmt_node {

type: 'use';

db: ident;

}

export type use_stmt = AstStatement<use_stmt_node>;

export interface alter_table_stmt_node {

type: 'alter';

table: table_ref_list;

expr: alter_action_list;

}

export type alter_table_stmt = AstStatement<alter_table_stmt_node>;

export type alter_action_list = alter_action[];

export type alter_action = ALTER_ADD_COLUMN | ALTER_DROP_COLUMN | ALTER_ADD_INDEX_OR_KEY | ALTER_ADD_FULLETXT_SPARITAL_INDEX | ALTER_RENAME_TABLE | ALTER_ALGORITHM | ALTER_LOCK;

export type ALTER_ADD_COLUMN = {

action: 'add';

keyword: KW_COLUMN;

resource: 'column';

type: 'alter';

} & create_column_definition;;

export type ALTER_DROP_COLUMN = {

action: 'drop';

collumn: column_ref;

keyword: KW_COLUMN;

resource: 'column';

type: 'alter';

};

export type ALTER_ADD_INDEX_OR_KEY = {

action: 'add';

type: 'alter';

} & create_index_definition;

export type ALTER_RENAME_TABLE = {

action: 'rename';

type: 'alter';

resource: 'table';

keyword?: 'to' | 'as';

table: ident;

};

export type ALTER_ALGORITHM = {

type: 'alter';

keyword: 'algorithm';

resource: 'algorithm';

symbol?: '=';

algorithm: 'DEFAULT' | 'INSTANT' | 'INPLACE' | 'COPY';

};

export type ALTER_LOCK = {

type: 'alter';

keyword: 'lock';

resource: 'lock';

symbol?: '=';

lock: 'DEFAULT' | 'NONE' | 'SHARED' | 'EXCLUSIVE';

};

export type create_index_definition = {

index: column;

definition: cte_column_definition;

keyword: 'index' | 'key';

index_type?: index_type;

resource: 'index';

index_options?: index_options;

};

export type create_fulltext_spatial_index_definition = {

index: column;

definition: cte_column_definition;

keyword: 'fulltext' | 'spatial' | 'fulltext key' | 'spatial key' | 'fulltext index' | 'spatial index';

index_options?: index_options;

resource: 'index';

};

export type create_constraint_definition = create_constraint_primary | create_constraint_unique | create_constraint_foreign;

export type constraint_name = { keyword: 'constraint'; constraint: ident; };

export type create_constraint_primary = {

constraint?: constraint_name['constraint'];

definition: cte_column_definition;

constraint_type: 'primary key';

index_type?: index_type;

resource: 'constraint';

index_options?: index_options;

};

export type create_constraint_unique = {

constraint?: constraint_name['constraint'];

definition: cte_column_definition;

constraint_type: 'unique key' | 'unique' | 'unique index';

index_type?: index_type;

resource: 'constraint';

index_options?: index_options;

};

export type create_constraint_foreign = {

constraint?: constraint_name['constraint'];

definition: cte_column_definition;

constraint_type: 'FOREIGN KEY';

keyword: constraint_name['keyword'];

index?: column;

resource: 'constraint';

reference_definition?: reference_definition;

};

export type reference_definition = {

definition: cte_column_definition;

table: table_ref_list;

keyword: 'references';

match: 'match full' | 'match partial' | 'match simple';

on_delete?: on_reference;

on_update?: on_reference;

};

export type on_reference = { type: 'on delete' | 'on update'; value: reference_option; };

export type reference_option = 'restrict' | 'cascade' | 'set null' | 'no action' | 'set default';

export type create_constraint_trigger = {

type: 'create';

constraint: string;

location: 'before' | 'after' | 'instead of';

events: trigger_event_list;

table: table_name;

from?: table_name;

deferrable?: trigger_deferrable;

for_each?: trigger_for_row;

when?: trigger_when;

execute: {

keyword: 'execute procedure';

expr: proc_func_call;

};

constraint_type: 'trigger';

keyword: 'trigger';

constraint_kw: 'constraint';

resource: 'constraint';

};

export type trigger_event = { keyword: 'insert' | 'delete' | 'truncate' } | { keyword: 'update'; args?: { keyword: 'of', columns: column_ref_list; }};

export type trigger_event_list = trigger_event[];;

export type trigger_deferrable = { keyword: 'deferrable' | 'not deferrable'; args: 'initially immediate' | 'initially deferred' };

export type trigger_for_row = { keyword: 'for' | 'for each'; args: 'row' | 'statement' };

export type trigger_when = { type: 'when'; cond: expr; parentheses: true; };

export type table_options = table_option[];

export type create_option_character_set_kw = string;

export type create_option_character_set = {

keyword: 'character set' | 'charset' | 'collate' | 'default character set' | 'default charset' | 'default collate';

symbol: '=';

value: ident_name;

};

export type table_option = {

keyword: 'auto_increment' | 'avg_row_length' | 'key_block_size' | 'max_rows' | 'min_rows' | 'stats_sample_pages';

symbol: '=';

value: number; // <== literal_numeric['value']

} | create_option_character_set | { keyword: 'connection' | 'comment'; symbol: '='; value: string; } | { keyword: 'compression'; symbol: '='; value: "'ZLIB'" | "'LZ4'" | "'NONE'" } | { keyword: 'engine'; symbol: '='; value: string; };

export type ALTER_ADD_FULLETXT_SPARITAL_INDEX = create_fulltext_spatial_index_definition & { action: 'add'; type: 'alter' };

export interface rename_stmt_node {

type: 'rename';

table: table_to_list;

}

export type rename_stmt = AstStatement<rename_stmt_node>;

export interface set_stmt_node {

type: 'set';

expr: assign_stmt & { keyword?: 'GLOBAL' | 'SESSION' | 'LOCAL' | 'PERSIST' | 'PERSIST_ONLY'; };

}

export type set_stmt = AstStatement<set_stmt_node>;

export type lock_mode = { mode: string; };

export interface lock_stmt_node {

type: 'lock';

keyword: 'lock';

tables: [[table_base], ...{table: table_ref}[]]; // see table_ref_list

lock_mode?: lock_mode;

nowait?: 'NOWAIT';

}

export type lock_stmt = AstStatement<lock_stmt_node>;

export interface call_stmt_node {

type: 'call';

expr: proc_func_call;

}

export type call_stmt = AstStatement<call_stmt_node>;

export interface show_stmt_node {

type: 'show';

keyword: 'tables';

}

export type show_stmt = AstStatement<show_stmt_node>;

export interface select_stmt_node extends select_stmt_nake {

parentheses_symbol: true;

}

export type select_stmt = { type: 'select'; } | select_stmt_nake | select_stmt_node;

export type with_clause = cte_definition[] | [cte_definition & {recursive: true; }];

export type cte_definition = { name: { type: 'default'; value: string; }; stmt: crud_stmt; columns?: cte_column_definition; };

export type cte_column_definition = column_ref_list;

export type distinct_on = {type: string; columns: column_ref_list;} | { type: string | undefined; };

export type select_stmt_nake = {

with?: with_clause;

type: 'select';

options?: option_clause;

distinct?: {type: string; columns?: column_list; };

columns: column_clause;

from?: from_clause;

into?: into_clause;

where?: where_clause;

groupby?: group_by_clause;

having?: having_clause;

orderby?: order_by_clause;

limit?: limit_clause;

window?: window_clause;

};

export type option_clause = query_option[];

export type query_option = 'SQL_CALC_FOUND_ROWS'| 'SQL_CACHE'| 'SQL_NO_CACHE'| 'SQL_BIG_RESULT'| 'SQL_SMALL_RESULT'| 'SQL_BUFFER_RESULT';

export type column_clause = 'ALL' | '*' | column_list_item[] | column_list_item[];

export type array_index = { brackets: boolean, number: number };

export type expr_item = expr & { array_index: array_index };

export type column_list_item = { expr: expr; as: null; } | { type: 'cast'; expr: expr; symbol: '::'; target: data_type; as?: null; } | { type: 'star_ref'; expr: column_ref; as: null; } | { type: 'expr'; expr: expr; as?: alias_clause; };

export type value_alias_clause = alias_ident;

export type alias_clause = alias_ident | ident;

export type into_clause = { keyword: 'var'; type: 'into'; expr: var_decl_list; } | { keyword: 'var'; type: 'into'; expr: literal_string | ident; };

export type from_clause = table_ref_list;

export type table_to_list = table_to_item[];

export type table_to_item = table_name[];

export type index_type = { keyword: 'using'; type: 'btree' | 'hash' | 'gist' | 'gin' };

export type index_options_list = index_option[];

export type index_options = index_option[];

export type index_option = { type: 'key_block_size'; symbol: '='; expr: number; } | { type: ident_name; symbol: '='; expr: number | {type: 'origin'; value: ident; }; } | index_type | { type: 'with parser'; expr: ident_name } | { type: 'visible'; expr: 'visible' } | { type: 'invisible'; expr: 'invisible' } | keyword_comment;

export type table_ref_list = [table_base, ...table_ref[]];

export type table_ref = table_base | table_join;

export type table_join = table_base & {join: join_op; using: ident_name[]; } | table_base & {join: join_op; on?: on_clause; } | {

expr: union_stmt & { parentheses: true; };

as?: alias_clause;

join: join_op;

on?: on_clause;

};

export type table_base = { type: 'dual' } | { expr: value_clause; as?: alias_clause; } | { prefix?: string; expr: union_stmt | value_clause; as?: alias_clause; } | { prefix?: string; type: 'expr'; expr: expr; as?: alias_clause; } | table_name & { expr: expr, repeatable: literal_numeric; as?: alias_clause;} | table_name & { as?: alias_clause; };

export type join_op = 'LEFT JOIN' | 'RIGHT JOIN' | 'FULL JOIN' | 'CROSS JOIN' | 'INNER JOIN';

export type table_name = { db?: ident; schema?: ident, table: ident | '*'; };

export type on_clause = or_and_where_expr;

export type where_clause = binary_expr;

export type group_by_clause = expr_list['value'];

export type column_ref_list = column_ref[];

export type having_clause = expr;

export type window_clause = { keyword: 'window'; type: 'window', expr: named_window_expr_list; };

export type named_window_expr_list = named_window_expr[];

export type named_window_expr = { name: ident_name; as_window_specification: as_window_specification; };

export type as_window_specification = ident_name | { window_specification: window_specification; parentheses: boolean };

export type window_specification = { name: null; partitionby: partition_by_clause; orderby: order_by_clause; window_frame_clause: string | null; };

export type window_specification_frameless = { name: null; partitionby: partition_by_clause; orderby: order_by_clause; window_frame_clause: null };

export type window_frame_clause = string;

export type window_frame_following = string | window_frame_current_row;

export type window_frame_preceding = string | window_frame_current_row;

export type window_frame_current_row = { type: 'single_quote_string'; value: string };

export type window_frame_value = literal_string | literal_numeric;

export type partition_by_clause = column_clause;

export type order_by_clause = order_by_list;

export type order_by_list = order_by_element[];

export type order_by_element = { expr: expr; type: 'ASC' | 'DESC'; nulls: 'NULLS FIRST' | 'NULLS LAST' | undefined };

export type number_or_param = literal_numeric | param;

export type limit_clause = { separator: 'offset' | ''; value: [number_or_param | { type: 'origin', value: 'all' }, number_or_param?] };

export interface update_stmt_node {

type: 'update';

table: table_ref_list;

set: set_list;

where?: where_clause;

returning?: returning_stmt;

}

export type update_stmt = AstStatement<update_stmt_node>;

export interface table_ref_addition extends table_name {

addition: true;

as?: alias_clause;

}

export interface delete_stmt_node {

type: 'delete';

table?: table_ref_list | [table_ref_addition];

where?: where_clause;

}

export type delete_stmt = AstStatement<delete_stmt_node>;

export type set_list = set_item[];

export type set_item = { column: ident; value: additive_expr; table?: ident;} | { column: ident; value: column_ref; table?: ident; keyword: 'values' };

type conflict_stmt = never;

export type returning_stmt = { type: 'returning'; columns: column_ref_list | column_ref; };

export type insert_value_clause = value_clause | select_stmt_nake;

export type insert_partition = ident_name[] | value_item;

export interface replace_insert_stmt_node {

type: 'insert' | 'replace';

table?: [table_name];

columns: column_list;

values: insert_value_clause;

partition?: insert_partition;

returning?: returning_stmt;

}

export type replace_insert_stmt = AstStatement<replace_insert_stmt_node>;

export type insert_no_columns_stmt = AstStatement<replace_insert_stmt_node>;

export type replace_insert = 'insert' | 'replace';

export type value_clause = value_list;

export type value_list = value_item[];

export type value_item = expr_list;

export type expr_list = { type: 'expr_list'; value: expr_item[] };

export type interval_expr = { type: 'interval', expr: expr; unit: interval_unit; };

export type case_expr = {

type: 'case';

expr: null;

// nb: Only the last element is a case_else

args: (case_when_then | case_else)[];

} | {

type: 'case';

expr: expr;

// nb: Only the last element is a case_else

args: (case_when_then | case_else)[];

};

export type case_when_then = { type: 'when'; cond: binary_expr; result: expr; };

export type case_else = { type: 'else'; condition?: never; result: expr; };

export type expr = logic_operator_expr | or_expr | unary_expr | union_stmt;

export type BINARY_OPERATORS = LOGIC_OPERATOR | 'OR' | 'AND' | multiplicative_operator | additive_operator

| arithmetic_comparison_operator

| 'IN' | 'NOT IN'

| 'BETWEEN' | 'NOT BETWEEN'

| 'IS' | 'IS NOT'

| 'LIKE'

| '@>' | '<@' | OPERATOR_CONCATENATION | DOUBLE_WELL_ARROW | WELL_ARROW | '?' | '?|' | '?&' | '#-'

export interface binary_expr {

type: 'binary_expr',

operator: BINARY_OPERATORS,

left: expr,

right: expr

}

export type logic_operator_expr = binary_expr;

export type UNARY_OPERATORS = '+' | '-' | 'EXISTS' | 'NOT EXISTS' | 'NULL'

export type unary_expr = {

type: 'unary_expr',

operator: UNARY_OPERATORS,

expr: expr;

parentheses?: boolean;

};

export type or_and_where_expr = binary_expr | { type: 'expr_list'; value: expr[] };

export type or_expr = binary_expr;

export type and_expr = binary_expr;

export type not_expr = comparison_expr | exists_expr | unary_expr;

export type comparison_expr = binary_expr | literal_string | column_ref;

export type exists_expr = unary_expr;

export type exists_op = 'NOT EXISTS' | KW_EXISTS;

export type comparison_op_right = arithmetic_op_right | in_op_right | between_op_right | is_op_right | like_op_right | jsonb_op_right;

export type arithmetic_op_right = { type: 'arithmetic'; tail: any };

export type arithmetic_comparison_operator = ">=" | ">" | "<=" | "<>" | "<" | "=" | "!=";

export type is_op_right = { op: 'IS'; right: additive_expr; } | { type: 'origin'; value: string; } | { type: 'IS NOT'; right: additive_expr; };

export type between_op_right = { op: 'BETWEEN' | 'NOT BETWEEN'; right: { type: 'expr_list'; value: [expr, expr] } };

export type between_or_not_between_op = 'NOT BETWEEN' | KW_BETWEEN;

export type like_op = 'LIKE' | KW_LIKE | KW_ILIKE | 'SIMILAR TO' | 'NOT SIMILAR TO';

export type escape_op = { type: 'ESCAPE'; value: literal_string };

export type in_op = 'NOT IN' | KW_IN;

export type like_op_right = { op: like_op; right: (literal | comparison_expr) & { escape?: escape_op }; };

export type in_op_right = {op: in_op; right: expr_list | var_decl | literal_string; };

export type jsonb_op_right = { op: string; right: expr };

export type additive_expr = binary_expr;

export type additive_operator = "+" | "-";

export type multiplicative_expr = binary_expr;

export type multiplicative_operator = "*" | "/" | "%";

export type primary = cast_expr | literal | aggr_func | window_func | func_call | case_expr | interval_expr | column_ref | param | or_and_where_expr | var_decl | { type: 'origin'; value: string; };

export type string_constants_escape = { type: 'origin'; value: string; };

export type column_ref = string_constants_escape | {

type: 'column_ref';

schema: string;

table: string;

column: column | '*';

arrows?: ('->>' | '->')[];

property?: (literal_string | literal_numeric)[];

} | {

type: 'column_ref';

table: ident;

column: column | '*';

arrows?: ('->>' | '->')[];

property?: (literal_string | literal_numeric)[];

};

export type column_list = column[];

export type ident = string;

export type alias_ident = string;

export type quoted_ident = double_quoted_ident | single_quoted_ident | backticks_quoted_ident;

export type double_quoted_ident = string;

export type single_quoted_ident = string;

export type backticks_quoted_ident = string;

export type column = string | quoted_ident;

export type column_name = string;

export type ident_name = string;

type ident_start = never;

type ident_part = never;

type column_part = never;

export type param = { type: 'param'; value: ident_name };

export type on_update_current_timestamp = { type: 'on update'; keyword: string; parentheses: boolean; expr: expr } | { type: 'on update'; keyword: string; };

export type over_partition = { type: 'windows'; as_window_specification: as_window_specification } | { partitionby: partition_by_clause; orderby: order_by_clause } | on_update_current_timestamp;

export type aggr_func = aggr_fun_count | aggr_fun_smma | aggr_array_agg;

export type window_func = window_fun_rank | window_fun_laglead | window_fun_firstlast;

export type window_fun_rank = { type: 'window_func'; name: string; over: over_partition };

export type window_fun_laglead = { type: 'window_func'; name: string; args: expr_list; consider_nulls: null | string; over: over_partition };

export type window_fun_firstlast = window_fun_laglead;

type KW_FIRST_LAST_VALUE = never;

type KW_WIN_FNS_RANK = never;

type KW_LAG_LEAD = never;

export type consider_nulls_clause = string;

export type aggr_fun_smma = { type: 'aggr_func'; name: 'SUM' | 'MAX' | 'MIN' | 'AVG'; args: { expr: additive_expr }; over: over_partition };

type KW_SUM_MAX_MIN_AVG = never;

export type aggr_fun_count = { type: 'aggr_func'; name: 'COUNT' | 'GROUP_CONCAT'; args:count_arg; over: over_partition } | { type: 'aggr_func'; name: 'PERCENTILE_CONT' | 'PERCENTILE_DISC'; args: literal_numeric / literal_array; within_group_orderby: order_by_clause; over?: over_partition } | { type: 'aggr_func'; name: 'MODE'; args: literal_numeric / literal_array; within_group_orderby: order_by_clause; over?: over_partition };

export type distinct_args = { distinct: 'DISTINCT'; expr: column_ref; } | { distinct: 'DISTINCT'; expr: expr; orderby?: order_by_clause; parentheses: boolean };

export type count_arg = { expr: star_expr } | distinct_args;

export type aggr_array_agg = { type: 'aggr_func'; args:count_arg; name: 'ARRAY_AGG'; orderby?: order_by_clause };

export type star_expr = { type: 'star'; value: '*' };

export type trim_position = "BOTH" | "LEADING" | "TRAILING";

export type trim_rem = expr_list;

export type trim_func_clause = { type: 'function'; name: string; args: expr_list; };

export type func_call = trim_func_clause | { type: 'function'; name: string; args: expr_list; } | { type: 'function'; name: string; args: expr_list; over?: over_partition; } | extract_func | { type: 'function'; name: string; over?: on_update_current_timestamp; };

export type extract_filed = "CENTURY" | "DAY" | "DATE" | "DECADE" | "DOW" | "DOY" | "EPOCH" | "HOUR" | "ISODOW" | "ISOYEAR" | "MICROSECONDS" | "MILLENNIUM" | "MILLISECONDS" | "MINUTE" | "MONTH" | "QUARTER" | "SECOND" | "TIMEZONE" | "TIMEZONE_HOUR" | "TIMEZONE_MINUTE" | "WEEK" | 'string';

export type extract_func = { type: 'extract'; args: { field: extract_filed; cast_type: 'TIMESTAMP' | 'INTERVAL' | 'TIME'; source: expr; }};

export type scalar_func = KW_CURRENT_DATE | KW_CURRENT_TIME | KW_CURRENT_TIMESTAMP | KW_CURRENT_USER | KW_USER | KW_SESSION_USER | KW_SYSTEM_USER;

export type cast_expr = {

as?: alias_clause,

type: 'cast';

expr: literal | aggr_func | func_call | case_expr | interval_expr | column_ref | param

| expr;

symbol: '::' | 'as',

target: data_type;

};

export type signedness = KW_SIGNED | KW_UNSIGNED;

export type literal = literal_string | literal_numeric | literal_bool | literal_null | literal_datetime | literal_array;

export type literal_array = {

expr_list: expr_list | {type: 'origin', value: ident },

type: string,

keyword: string,

brackets: boolean

};

export type literal_list = literal[];

export type literal_null = { type: 'null'; value: null };

export type literal_not_null = { type: 'not null'; value: 'not null' };

export type literal_bool = { type: 'bool', value: true } | { type: 'bool', value: false };

export type literal_string = { type: 'single_quote_string'; value: string; } | { type: 'string'; value: string; };

export type literal_datetime = { type: 'TIME' | 'DATE' | 'TIMESTAMP' | 'DATETIME', value: string };

export type single_quote_char = string;

export type single_char = string;

export type escape_char = string;

export type line_terminator = string;

export type literal_numeric = number | { type: 'bigint'; value: string; };

export type int = string;

export type frac = string;

export type exp = string;

export type digits = string;

export type digit = string;

export type hexDigit = string;

export type e = string;

type KW_NULL = never;

type KW_DEFAULT = never;

type KW_NOT_NULL = never;

type KW_TRUE = never;

type KW_TO = never;

type KW_FALSE = never;

type KW_SHOW = never;

type KW_DROP = never;

type KW_USE = never;

type KW_ALTER = never;

type KW_SELECT = never;

type KW_UPDATE = never;

type KW_CREATE = never;

type KW_TEMPORARY = never;

type KW_TEMP = never;

type KW_DELETE = never;

type KW_INSERT = never;