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grammar.js
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grammar.js
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const PREC = {
primary: 8,
unary: 7,
exp: 6,
multiplicative: 5,
additive: 4,
comparative: 3,
and: 2,
or: 1,
};
const multiplicative_operators = ["*", "/", "%", "<<", ">>", "&"];
const additive_operators = ["+", "-", "|", "#"];
const comparative_operators = [
"<",
"<=",
"<>",
"!=",
"=",
">",
">=",
"~",
"!~",
"~*",
"!~*",
];
// Generate case insentitive match for SQL keyword
// In case of multiple word keyword provide a seq matcher
function kw(keyword) {
if (keyword.toUpperCase() != keyword) {
throw new Error(`Expected upper case keyword got ${keyword}`);
}
const words = keyword.split(" ");
const regExps = words.map(createCaseInsensitiveRegex);
return regExps.length == 1
? alias(regExps[0], keyword)
: alias(seq(...regExps), keyword.replace(/ /g, "_"));
}
function createOrReplace(item) {
if (item.toUpperCase() != item) {
throw new Error(`Expected upper case item got ${item}`);
}
return alias(
seq(
createCaseInsensitiveRegex("CREATE"),
field("replace", optional(createCaseInsensitiveRegex("OR REPLACE"))),
createCaseInsensitiveRegex(item),
),
`CREATE_OR_REPLACE_${item}`,
);
}
function createCaseInsensitiveRegex(word) {
return new RegExp(
word
.split("")
.map(letter => `[${letter.toLowerCase()}${letter.toUpperCase()}]`)
.join(""),
);
}
function kv(key, value) {
return alias(
value === null
? createCaseInsensitiveRegex(key)
: seq(createCaseInsensitiveRegex(key), "=", field("value", value)),
key.toLowerCase(),
);
}
module.exports = grammar({
name: "sql",
extras: $ => [$.comment, /[\s\f\uFEFF\u2060\u200B]|\\\r?\n/],
externals: $ => [
$._dollar_quoted_string_tag,
$._dollar_quoted_string_content,
$._dollar_quoted_string_end_tag,
],
rules: {
source_file: $ => repeat($._statement),
_statement: $ =>
seq(
choice(
$.pg_command,
$.begin_statement,
$.commit_statement,
$.rollback_statement,
$.select_statement,
$.update_statement,
$.insert_statement,
$.delete_statement,
$.set_statement,
$.grant_statement,
$.drop_statement,
$.create_statement,
$.alter_statement,
$.truncate_statement,
$.create_type_statement,
$.create_domain_statement,
$.create_index_statement,
$.create_table_statement,
$.create_schema_statement,
$.create_role_statement,
$.create_extension_statement,
$.create_trigger_statement,
$.create_function_statement,
$.comment_statement,
$.create_view_statement,
$.create_materialized_view_statement,
),
optional(";"),
),
_simple_statement: $ =>
prec.right(
seq(
choice(
$.pg_command,
$.select_statement,
$.update_statement,
$.insert_statement,
$.delete_statement,
$.set_statement,
$.grant_statement,
$.drop_statement,
$.create_statement,
$.alter_statement,
$.create_type_statement,
$.create_domain_statement,
$.create_table_statement,
$.create_index_statement,
$.create_schema_statement,
$.create_role_statement,
$.create_extension_statement,
$.return_statement,
$.declare_statement,
$.create_view_statement,
$.create_materialized_view_statement,
),
optional(";"),
),
),
with_clause: $ =>
seq(kw("WITH"), optional(kw("RECURSIVE")), commaSep1($.cte)),
cte: $ =>
seq(
$.identifier,
kw("AS"),
optional(seq(optional(kw("NOT")), kw("MATERIALIZED"))),
"(",
choice(
$.select_statement,
$.delete_statement,
$.insert_statement,
$.update_statement,
),
")",
),
select_statement: $ => seq(optional($.with_clause), $._select_statement),
insert_statement: $ => seq(optional($.with_clause), $._insert_statement),
update_statement: $ => seq(optional($.with_clause), $._update_statement),
delete_statement: $ => seq(optional($.with_clause), $._delete_statement),
truncate_statement: $ =>
seq(
kw("TRUNCATE"),
optional(kw("TABLE")),
optional(kw("ONLY")),
commaSep1($._identifier),
),
comment_statement: $ =>
seq(
kw("COMMENT ON"),
choice(
seq(
choice(kw("COLUMN"), kw("EXTENSION"), kw("SCHEMA"), kw("TABLE")),
$._identifier,
),
seq(kw("FUNCTION"), $.function_call),
),
kw("IS"),
choice($.string, $.NULL),
),
begin_statement: $ =>
seq(kw("BEGIN"), optional(choice(kw("WORK"), kw("TRANSACTION")))),
commit_statement: $ =>
seq(kw("COMMIT"), optional(choice(kw("WORK"), kw("TRANSACTION")))),
rollback_statement: $ =>
seq(kw("ROLLBACK"), optional(choice(kw("WORK"), kw("TRANSACTION")))),
create_statement: $ =>
seq(
kw("CREATE"),
optional(choice(kw("TEMP"), kw("TEMPORARY"))),
choice(alias($.sequence, $.create_sequence)),
),
alter_statement: $ =>
seq(
kw("ALTER"),
choice(
alias($.sequence, $.alter_sequence),
$.alter_table,
alias($.alter_schema, $.schema),
),
),
alter_table: $ =>
seq(
kw("TABLE"),
optional(kw("IF EXISTS")),
optional(kw("ONLY")),
$._identifier,
choice($.alter_table_action, $.alter_table_rename_column),
),
alter_schema_rename_action: $ => seq(kw("RENAME TO"), $._identifier),
alter_owner_action: $ =>
seq(
kw("OWNER TO"),
choice($._identifier, "CURRENT_USER", "CURRENT_ROLE", "SESSION_USER"),
),
alter_schema: $ =>
seq(
kw("SCHEMA"),
$._identifier,
choice(
alias($.alter_schema_rename_action, $.rename),
alias($.alter_owner_action, $.alter_owner),
),
),
alter_table_action_alter_column: $ =>
seq(
kw("ALTER COLUMN"),
$._identifier,
kw("SET DEFAULT"),
$._column_default_expression,
),
alter_table_action_add: $ =>
seq(
kw("ADD"),
choice(seq(kw("COLUMN"), $.table_column), $._table_constraint),
),
alter_table_action_set: $ => seq(kw("SET"), $._expression),
alter_table_rename_column: $ =>
seq(
kw("RENAME"),
optional(kw("COLUMN")),
$._identifier,
kw("TO"),
$._identifier,
),
alter_table_action: $ =>
choice(
$.alter_table_action_add,
$.alter_table_action_alter_column,
$.alter_table_action_set,
alias($.alter_owner_action, $.alter_owner),
),
sequence: $ =>
prec.right(
seq(
kw("SEQUENCE"),
optional(seq(kw("IF"), optional(kw("NOT")), kw("EXISTS"))),
$._identifier,
optional(seq(kw("AS"), $.type)),
repeat(
choice(
seq(kw("START"), kw("WITH"), $.number),
seq(kw("INCREMENT"), optional(kw("BY")), $.number),
seq(kw("NO"), choice(kw("MINVALUE"), kw("MAXVALUE"))),
seq(kw("CACHE"), $.number),
seq(kw("OWNED BY"), choice($._identifier)),
),
),
),
),
pg_command: $ => seq(/\\[a-zA-Z]+/, /.*/),
_compound_statement: $ =>
prec.right(
seq(
optional(seq(field("begin_label", $.identifier), ":")),
kw("BEGIN"),
optional(kw("ATOMIC")),
repeat1($._simple_statement),
kw("END"),
optional(field("end_label", $.identifier)),
optional(";"),
),
),
return_statement: $ =>
seq(kw("RETURN"), choice($._expression, $.select_statement)),
declare_statement: $ =>
seq(kw("DECLARE"), $.identifier, $._type, optional($.default_clause)),
create_function_statement: $ =>
prec.right(
seq(
choice(createOrReplace("FUNCTION"), createOrReplace("PROCEDURE")),
$._identifier,
$.create_function_parameters,
optional(seq(kw("RETURNS"), $._create_function_return_type)),
repeat(
choice(
$._function_language,
seq(kw("TRANSFORM FOR TYPE"), commaSep1($.identifier)),
kw("WINDOW"),
seq(optional(kw("NOT")), kw("LEAKPROOF")),
seq(kw("COST"), $.number),
seq(kw("ROWS"), $.number),
seq(kw("SUPPORT"), $.identifier),
$.external_hint,
$.optimizer_hint,
$.parallel_hint,
$.null_hint,
$.deterministic_hint,
$.sql_hint,
$.sql_security_hint,
$.function_body,
),
),
),
),
external_hint: $ =>
choice(
seq(optional(kw("EXTERNAL")), kw("SECURITY INVOKER")),
seq(optional(kw("EXTERNAL")), kw("SECURITY DEFINER")),
),
optimizer_hint: $ => choice(kw("VOLATILE"), kw("IMMUTABLE"), kw("STABLE")),
parallel_hint: $ =>
seq(kw("PARALLEL"), choice(kw("SAFE"), kw("UNSAFE"), kw("RESTRICTED"))),
null_hint: $ =>
choice(
kw("CALLED ON NULL INPUT"),
kw("RETURNS NULL ON NULL INPUT"),
kw("STRICT"),
),
// MySQL hints
deterministic_hint: $ => seq(optional(kw("NOT")), kw("DETERMINISTIC")),
sql_hint: $ =>
choice(
kw("CONTAINS SQL"),
kw("NO SQL"),
kw("READS SQL DATA"),
kw("MODIFIES SQL DATA"),
),
sql_security_hint: $ =>
seq(kw("SQL SECURITY"), choice(kw("DEFINER"), kw("INVOKER"))),
_function_language: $ =>
seq(
kw("LANGUAGE"),
alias(choice(/[a-zA-Z]+/, /'[a-zA-Z]+'/), $.language),
),
_create_function_return_type: $ =>
prec.right(choice($.setof, $._type, $.constrained_type)),
setof: $ =>
prec.right(seq(kw("SETOF"), choice($._type, $.constrained_type))),
constrained_type: $ => seq($._type, $.null_constraint),
create_function_parameter: $ =>
seq(
field(
"argmode",
optional(choice(kw("IN"), kw("OUT"), kw("INOUT"), kw("VARIADIC"))),
),
optional($.identifier),
choice($._type, $.constrained_type),
optional(seq("=", alias($._expression, $.default))),
),
create_function_parameters: $ =>
seq("(", optional(commaSep1($.create_function_parameter)), ")"),
function_body: $ =>
choice(
$._simple_statement,
$._compound_statement,
seq(kw("AS"), field("script", $.string)),
seq(
kw("AS"),
field("obj_file", $.string),
field("link_symbol", $.string),
),
),
create_trigger_statement: $ =>
seq(
kw("CREATE"),
optional(kw("OR REPLACE")),
optional(kw("CONSTRAINT")),
kw("TRIGGER"),
optional(kw("IF NOT EXISTS")),
field("name", $.identifier),
$.trigger_time,
$.trigger_event,
kw("ON"),
field("on_table", $._identifier),
optional($.trigger_reference),
optional($.trigger_preferencing),
optional(
seq(
kw("FOR"),
optional(kw("EACH")),
choice(kw("ROW"), kw("STATEMENT")),
),
),
optional($.trigger_condition),
optional($.trigger_order),
$.trigger_body,
),
trigger_reference: $ => seq(kw("FROM"), $._identifier),
trigger_preferencing: $ =>
seq(
kw("REFERENCING"),
repeat1(
seq(
choice(kw("NEW"), kw("OLD")),
kw("TABLE"),
optional(kw("AS")),
$.identifier,
),
),
),
trigger_time: $ => choice(kw("BEFORE"), kw("AFTER"), kw("INSTEAD OF")),
trigger_event: $ =>
choice(
kw("INSERT"),
kw("DELETE"),
kw("TRUNCATE"),
seq(kw("UPDATE"), optional(seq(kw("OF"), repeat1($._identifier)))),
),
// PostgreSQL trigger condition
trigger_condition: $ => seq(kw("WHEN"), $._expression),
// MySQL trigger order
trigger_order: $ =>
seq(choice(kw("FOLLOWS"), kw("PRECEDES")), $._identifier),
trigger_body: $ =>
choice(
// PostgreSQL style trigger body
seq(
kw("EXECUTE"),
choice(kw("FUNCTION"), kw("PROCEDURE")),
seq(
field("function", $.identifier),
"(",
optional(field("arguments", commaSep1($.string))),
")",
),
),
// MySQL style trigger body
$._simple_statement,
$._compound_statement,
),
create_extension_statement: $ =>
prec.right(
seq(
kw("CREATE EXTENSION"),
optional(kw("IF NOT EXISTS")),
$._identifier,
optional(kw("WITH")),
repeat(
choice(
seq(kw("SCHEMA"), alias($._identifier, $.schema)),
seq(kw("VERSION"), alias($.string, $.version)),
kw("CASCADE"),
),
),
),
),
create_role_statement: $ =>
prec.right(
seq(
kw("CREATE ROLE"),
$._identifier,
optional(kw("WITH")),
optional($._identifier),
),
),
create_schema_statement: $ =>
seq(kw("CREATE SCHEMA"), optional(kw("IF NOT EXISTS")), $._identifier),
drop_statement: $ =>
seq(
kw("DROP"),
field(
"kind",
choice(
kw("TABLE"),
kw("VIEW"),
kw("INDEX"),
kw("EXTENSION"),
kw("TABLESPACE"),
kw("MATERIALIZED VIEW"),
),
),
optional(kw("CONCURRENTLY")),
optional(kw("IF EXISTS")),
field("target", commaSep1($._identifier)),
optional(choice(kw("CASCADE"), kw("RESTRICT"))),
),
set_statement: $ =>
seq(
kw("SET"),
field("scope", optional(choice(kw("SESSION"), kw("LOCAL")))),
$.identifier,
choice("=", kw("TO")),
choice($._expression, kw("DEFAULT")),
),
grant_statement: $ =>
prec.right(
seq(
kw("GRANT"),
choice(
seq(kw("ALL"), optional(kw("PRIVILEGES"))),
repeat(
choice(
kw("SELECT"),
kw("INSERT"),
kw("UPDATE"),
kw("DELETE"),
kw("TRUNCATE"),
kw("REFERENCES"),
kw("TRIGGER"),
kw("USAGE"),
),
),
),
kw("ON"),
field(
"type",
optional(
choice(kw("SCHEMA"), kw("DATABASE"), kw("SEQUENCE"), kw("TABLE")),
),
),
$._identifier,
kw("TO"),
choice(seq(optional(kw("GROUP")), $.identifier), kw("PUBLIC")),
optional(kw("WITH GRANT OPTION")),
),
),
create_domain_statement: $ =>
prec.right(
seq(
kw("CREATE DOMAIN"),
$._identifier,
optional(
seq(
kw("AS"),
$._type,
repeat(choice($.null_constraint, $.check_constraint)),
),
),
),
),
create_type_statement: $ =>
prec.right(
seq(
kw("CREATE TYPE"),
field("type_name", $._identifier),
optional(
choice(
$.type_spec_composite,
$.type_spec_enum,
$.type_spec_range,
$.type_spec_base,
),
),
),
),
type_spec_composite: $ =>
seq(
kw("AS"),
"(",
commaSep1(seq($.identifier, choice($._type, $.constrained_type))),
")",
),
type_spec_enum: $ =>
seq(kw("AS"), kw("ENUM"), "(", commaSep($.string), ")"),
type_spec_range: $ =>
seq(
kw("AS"),
kw("RANGE"),
"(",
commaSep(
choice(
...[
"SUBTYPE",
"SUBTYPE_OPCLASS",
"COLLATION",
"CANONICAL",
"SUBTYPE_DIFF",
"MULTIRANGE_TYPE_NAME",
].map(k => kv(k, $._identifier)),
),
),
")",
),
type_spec_base: $ =>
seq(
"(",
commaSep(
choice(
...[
["INPUT", $._identifier],
["OUTPUT", $._identifier],
["RECEIVE", $._identifier],
["SEND", $._identifier],
["TYPMOD_IN", $._identifier],
["TYPMOD_OUT", $._identifier],
["ANALYZE", $._identifier],
["SUBSCRIPT", $._identifier],
["INTERNALLENGTH", choice($.number, kw("VARIABLE"))],
["PASSEDBYVALUE", null],
["ALIGNMENT", $._identifier],
["STORAGE", $._identifier],
["LIKE", $._identifier],
["CATEGORY", $.string],
["PREFERRED", $.string],
["DEFAULT", $._expression],
["ELEMENT", $._identifier],
["DELIMITER", $.string],
["COLLATABLE", $._identifier],
].map(([k, v]) => kv(k, v)),
),
),
")",
),
create_index_with_clause: $ =>
seq(
kw("WITH"),
"(",
field("storage_parameter", $.identifier),
"=",
// TODO: Option value be special set e.g. accepting enum with ON, OFF, VALUE
$._expression,
")",
),
create_index_include_clause: $ =>
seq(kw("INCLUDE"), "(", commaSep1($.identifier), ")"),
create_index_statement: $ =>
prec.right(
seq(
kw("CREATE"),
optional($.unique_constraint),
kw("INDEX"),
optional(kw("CONCURRENTLY")),
optional(
seq(optional(kw("IF NOT EXISTS")), field("name", $.identifier)),
),
kw("ON"),
optional(kw("ONLY")),
field("table_name", $._identifier),
optional($.using_clause),
$.index_table_parameters,
optional($.create_index_include_clause),
optional($.create_index_with_clause),
optional($.where_clause),
),
),
table_column: $ =>
prec.right(
seq(
field("name", $._identifier),
field("type", $._type),
repeat(
choice(
$.default_clause,
$.primary_key_constraint,
$.check_constraint,
$.references_constraint,
$.unique_constraint,
$.null_constraint,
$.named_constraint,
$.direction_constraint,
$.auto_increment_constraint,
),
),
),
),
auto_increment_constraint: _ => kw("AUTO_INCREMENT"),
direction_constraint: _ => choice(kw("ASC"), kw("DESC")),
named_constraint: $ => seq("CONSTRAINT", $.identifier),
_column_default_expression: $ =>
choice(
$._parenthesized_expression,
$.string,
$.number,
$.identifier,
$.function_call,
),
default_clause: $ =>
seq(
kw("DEFAULT"),
// TODO: this should be specific variable-free expression https://www.postgresql.org/docs/9.1/sql-createtable.html
// TODO: simple expression to use for check and default
choice($._column_default_expression, $.type_cast),
),
table_parameters: $ =>
seq(
"(",
optional(commaSep1(choice($.table_column, $._table_constraint))),
")",
),
mode: $ => choice(kw("NOT DEFERRABLE"), kw("DEFERRABLE")),
initial_mode: $ =>
seq(kw("INITIALLY"), choice(kw("DEFERRED"), kw("IMMEDIATE"))),
_table_constraint: $ =>
prec.right(
seq(
optional(seq(kw("CONSTRAINT"), field("name", $._identifier))),
choice(
alias($.table_constraint_foreign_key, $.foreign_key),
alias($.table_constraint_unique, $.unique),
alias($.table_constraint_primary_key, $.primary_key),
alias($.table_constraint_check, $.check),
alias($.table_constraint_exclude, $.exclude),
),
optional($.mode),
optional($.initial_mode),
),
),
table_constraint_check: $ => seq(kw("CHECK"), $._expression),
op_class: $ => $._identifier,
exclude_entry: $ =>
seq(
$._identifier,
optional($.op_class),
optional(seq(kw("WITH"), $.binary_operator)),
),
table_constraint_exclude: $ =>
seq(
kw("EXCLUDE"),
optional(seq(kw("USING"), $._identifier)),
"(",
commaSep1($.exclude_entry),
")",
),
table_constraint_foreign_key: $ =>
seq(
kw("FOREIGN KEY"),
"(",
commaSep1($.identifier),
")",
$.references_constraint,
),
table_constraint_unique: $ =>
seq(kw("UNIQUE"), "(", commaSep1($._identifier), ")"),
table_constraint_primary_key: $ =>
seq(kw("PRIMARY KEY"), "(", commaSep1($._identifier), ")"),
primary_key_constraint: $ => kw("PRIMARY KEY"),
create_table_statement: $ =>
seq(
kw("CREATE"),
optional(choice(kw("TEMPORARY"), kw("TEMP"))),
kw("TABLE"),
optional(kw("IF NOT EXISTS")),
$._identifier,
choice(seq(kw("AS"), $.select_statement), $.table_parameters),
optional(kw("WITHOUT OIDS")),
),
using_clause: $ =>
seq(
kw("USING"),
choice($.identifier, seq("(", commaSep1($._identifier), ")")),
),
index_table_parameters: $ =>
seq(
"(",
commaSep1(
seq(
choice($._expression, $.ordered_expression),
optional($.op_class),
),
),
")",
),
create_view_statement: $ =>
prec.right(
seq(
kw("CREATE"),
optional(createCaseInsensitiveRegex("OR REPLACE")),
optional(choice(kw("TEMPORARY"), kw("TEMP"))),
kw("VIEW"),
$._identifier,
optional($.view_columns),
optional($.view_options),
$.view_body,
optional($.view_check_option),
),
),
view_columns: $ => seq("(", commaSep1($._identifier), ")"),
// PostgreSQL currently only support the SECURITY_BARRIER option
view_option: $ => choice($._identifier, $.assigment_expression),
view_options: $ => seq(kw("WITH"), "(", commaSep1($.view_option), ")"),
// MySQL support
view_check_option: $ =>
seq(
kw("WITH"),
optional(choice(kw("CASCADED"), kw("LOCAL"))),
kw("CHECK OPTION"),
),
view_body: $ =>
seq(
kw("AS"),
choice($.select_statement, $.select_subexpression, $.values_clause),
),
create_materialized_view_statement: $ =>
prec.right(
seq(
kw("CREATE MATERIALIZED VIEW"),
optional(kw("IF NOT EXISTS")),
$._identifier,
optional($.view_columns),
optional($.using_clause),
optional($.view_options),
optional($.tablespace_hint),
$.view_body,
optional($.data_hint),
),
),
tablespace_hint: $ => seq(kw("TABLESPACE"), $._identifier),
data_hint: $ => seq(kw("WITH"), optional(kw("NO")), kw("DATA")),
// SELECT
_select_statement: $ =>
prec.right(
seq(
$.select_clause,
optional($.from_clause),
optional($.where_clause),
optional($.group_by_clause),
optional(commaSep1($.window_clause)),
optional($.order_by_clause),
optional($.limit_clause),
optional($.offset_clause),
),
),
group_by_clause: $ =>
seq(
kw("GROUP BY"),
commaSep1($.group_expression),
optional($.having_clause),
),
having_clause: $ => seq(kw("HAVING"), $._expression),
group_expression: $ =>
choice(
$._expression,
$.grouping_sets_clause,
$.rollup_clause,
$.cube_clause,
),
grouping_sets_clause: $ =>
seq(kw("GROUPING SETS"), "(", commaSep1($.expression_list), ")"),
rollup_clause: $ =>
seq(
kw("ROLLUP"),
"(",
commaSep1(choice($._expression, $.expression_list)),
")",
),
cube_clause: $ =>
seq(
kw("CUBE"),
"(",
commaSep1(choice($._expression, $.expression_list)),
")",
),
expression_list: $ => seq("(", optional(commaSep1($._expression)), ")"),
order_expression: $ =>
seq(
$._expression,
optional(alias(choice(kw("ASC"), kw("DESC")), $.order)),
optional(
alias(
seq(kw("NULLS"), choice(kw("FIRST"), kw("LAST"))),
$.nulls_order,
),
),
),
window_clause: $ =>
seq(kw("WINDOW"), $.identifier, kw("AS"), $.window_definition),
order_by_clause: $ => seq(kw("ORDER BY"), commaSep1($.order_expression)),
limit_clause: $ =>
seq(
kw("LIMIT"),
choice($.number, kw("ALL")),
optional(seq(",", $.number)), // MySQL LIMIT a, b
),
offset_clause: $ =>
prec.right(
seq(kw("OFFSET"), $.number, optional(choice(kw("ROW"), kw("ROWS")))),
),
fetch_clause: $ =>
seq(
kw("FETCH"),
choice(kw("FIRST"), kw("NEXT")),
optional($.number),
choice(kw("ROW"), kw("ROWS")),
kw("ONLY"),
),
where_clause: $ => seq(kw("WHERE"), $._expression),
alias: $ =>
choice(
seq(
$.identifier,
optional(choice($.column_names, $.column_definitions)),
),
$.column_definitions,
),
_aliased_expression: $ => seq($._expression, optional(kw("AS")), $.alias),
column_names: $ => seq("(", commaSep1($.identifier), ")"),
column_definitions: $ => seq("(", commaSep1($.table_column), ")"),
_aliasable_expression: $ =>
prec.right(choice($._expression, $._aliased_expression)),
select_clause_body: $ =>
commaSep1(
seq(
$._aliasable_expression,
optional(seq(kw("INTO"), field("into", $.identifier))),
),
),
select_clause: $ =>
prec.right(seq(kw("SELECT"), optional($.select_clause_body))),
from_clause: $ => seq(kw("FROM"), commaSep1($._from_item)),
_from_item: $ =>
choice(
seq(
optional(kw("ONLY")),
$._aliasable_expression,
optional($.tablesample_clause),
),
seq("(", $.join_clause, ")"),
$.join_clause,
),
tablesample_clause: $ =>
seq(kw("TABLESAMPLE"), $.function_call, optional($.repeatable_clause)),
repeatable_clause: $ =>
seq(kw("REPEATABLE"), "(", field("seed", $._expression), ")"),
rows_from_expression: $ =>
prec.right(
seq(
optional(kw("LATERAL")),
kw("ROWS FROM"),
"(",
commaSep1(seq($.function_call, optional(seq(kw("AS"), $.alias)))),
")",
optional($.with_ordinality),
),
),
join_clause: $ =>
seq(
$._from_item,
optional(kw("NATURAL")),
optional($.join_type),
kw("JOIN"),
$._from_item,
choice($.join_condition, $.using_clause),
),
join_type: $ =>
seq(
choice(
kw("INNER"),
seq(
choice(kw("LEFT"), kw("RIGHT"), kw("FULL")),
optional(kw("OUTER")),
),
),
),
join_condition: $ => seq(kw("ON"), $._expression),
select_subexpression: $ =>
prec(1, seq(optional(kw("LATERAL")), "(", $.select_statement, ")")),
// UPDATE
_update_statement: $ =>
seq(
kw("UPDATE"),
$.identifier,
$.set_clause,
optional($.from_clause),
optional($.where_clause),
),
set_clause: $ => seq(kw("SET"), $.set_clause_body),
set_clause_body: $ => seq(commaSep1($.assigment_expression)),
assigment_expression: $ => seq($._identifier, "=", $._expression),
// INSERT
_insert_statement: $ =>