[jackcloudquery]

SELECT * FROM t ip failed with <EOF> or ';' was expected, but got: "ip": parseTableExpr refused every keyword as a table alias without AS. ClickHouse refuses only the keywords that can follow a table (ParserAlias::restricted_keywords), so FROM t ip, FROM t key and FROM (SELECT 1) ip all run there. Column aliases already work this way since #193.

A keyword after a table is now its alias unless it is:

• reserved, refused by matchTokenKind as before;
• one of the non-reserved keywords in ClickHouse's list: ALL, ANTI, ANY, ARRAY, ASOF, FINAL, FULL, GLOBAL, INTERSECT, JOIN, LEFT, RIGHT, SAMPLE, SEMI;
• LOCAL, which this parser reads only as a join locality (Fix parsing of the GLOBAL/LOCAL join locality and GLOBAL NOT IN #293 rejects FROM t1 LOCAL);
• COMMENT before a string, which ends a view or table query (... FROM t COMMENT 'x'), as in ClickHouse since Fix parser treating COMMENT as implicit alias in CREATE MATERIALIZED VIEW ClickHouse/ClickHouse#110372;
• UUID after a table name, which ClickHouse reads as t UUID 'uuid'. FROM (SELECT 1) uuid stays an alias.
• OVER after a table function, which ClickHouse reads as the function's window clause, so FROM numbers(3) over fails there (checked with clickhouse local 26.9). FROM t over and FROM (SELECT 1) over stay aliases.

Tests:

• TestNonReservedKeywordAsTableAliasWithoutAs: aliases on tables, subqueries, table functions, joins and comma joins, plus one case for each keyword that can follow a table. Each query is also formatted and parsed back.
• TestTableAliasWithoutAsForEveryKeyword: every non-reserved keyword after a table name.
• TestOverAfterTableFunctionIsNotAnAlias: FROM numbers(3) over fails.
• TestTableAliasRestrictedKeywordsMatchClickHouse: the restricted set must equal the non-reserved part of ClickHouse's list plus LOCAL, so a keyword added later cannot slip past it.
• New fixture select_table_keyword_alias_without_as.sql, with regenerated output/ and format/ goldens.

Verification:

• go test -race ./... -compatible passes on Go 1.27; CI covers 1.21.
• golangci-lint v1.53.3 with .golangci.yml: no issues. govet's atomicalign analyzer was off, because v1.53.3 panics in it when built with Go 1.22.
• clickhouse local 26.9 (EXPLAIN AST) agrees with every case in the new tests except FROM t LOCAL JOIN u, which ClickHouse reads as alias LOCAL plus a plain join.
• All 260 keywords after a table name, checked against ClickHouse 26.9: alias or not, the result matches for every non-reserved keyword except LOCAL. The 24 reserved keywords that ClickHouse takes as aliases (SELECT, CASE, ...) stay refused, as before.
• All 275,425 statements in ClickHouse's tests/queries/0_stateless, parsed with master and with this branch: 27 now parse (implicit aliases such as first, source, user, values and comment), and no statement that parsed before fails or parses differently.