Documentation
¶
Overview ¶
Package token defines constants representing the lexical tokens of ClickHouse SQL.
Index ¶
Constants ¶
This section is empty.
Variables ¶
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var Keywords map[string]Token
Keywords maps keyword strings to their token types.
Functions ¶
This section is empty.
Types ¶
type Position ¶
type Position struct {
Offset int // byte offset
Line int // line number (1-based)
Column int // column number (1-based)
}
Position represents a source position.
type Token ¶
type Token int
Token represents a lexical token.
const ( // Special tokens ILLEGAL Token = iota EOF WHITESPACE LINE_COMMENT // SQL comments like -- and /* */ // Literals IDENT // identifiers NUMBER // integer or float literals STRING // string literals PARAM // parameter placeholders like {name:Type} // Operators PLUS // + MINUS // - ASTERISK // * SLASH // / PERCENT // % EQ // = NEQ // != or <> LT // < GT // > LTE // <= GTE // >= CONCAT // || ARROW // -> COLONCOLON // :: NULL_SAFE_EQ // <=> CARET // ^ // Delimiters LPAREN // ( RPAREN // ) LBRACKET // [ RBRACKET // ] LBRACE // { RBRACE // } COMMA // , DOT // . SEMICOLON // ; COLON // : QUESTION // ? ADD ALIAS ALL ALTER AND ANTI ANY APPLY ARRAY AS ASC ASOF ATTACH BACKUP BEGIN BETWEEN BOTH BY CASE CAST CHECK CLUSTER COLLATE COLUMN COLUMNS COMMENT COMMIT CONSTRAINT CREATE CROSS CUBE DATABASE DATABASES DEFAULT DELETE DESC DESCRIBE DETACH DISTINCT DISTRIBUTED DIV DROP ELSE END ENGINE EXCEPT EXCHANGE EXISTS EXPLAIN EXTRACT FALSE FETCH FILL FINAL FIRST FREEZE FOR FORMAT FROM FULL FUNCTION GLOBAL GRANT GROUP GROUPING HAVING IF ILIKE IN INDEX INF INNER INSERT INTERSECT INTERPOLATE INTERVAL INTO IS JOIN KEY KILL LEADING LEFT LIKE LIMIT LAST LIVE LOCAL MATERIALIZED MOD MODIFY NAN NATURAL NOT NULL NULLS OFFSET ON OPTIMIZE OR ORDER OUTER OUTFILE OVER PARTITION PARALLEL PASTE POPULATE PREWHERE PRIMARY QUALIFY REGEXP RENAME REPLACE RESTORE REVOKE RIGHT ROLLBACK ROLLUP SAMPLE SELECT SEMI SET SETS SETTINGS SHOW SNAPSHOT STEP SUBSTRING SYNC SYSTEM TABLE TABLES TEMPORARY THEN TIES TO TOP TOTALS TRAILING TRANSACTION TRIM TRUE TRUNCATE TTL UNDROP UNION UPDATE USE USER USING VALUES VIEW WATCH WHEN WHERE WINDOW WITH )
func Lookup ¶
Lookup returns the token type for an identifier string. If the string is a keyword, it returns the keyword token. Otherwise, it returns IDENT.
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