---input---
-- Samples of MySQL parsing


-- Comments
# standalone comment line
-- standalone comment line
SELECT 1; -- trailing comment
SELECT 1; # trailing comment
SELECT 1; /* trailing comment */
SELECT /* interruption */  /**/ 1;
 /*
    Multiline / * / comment
 */
 /* /* MySQL does not support nested comments */
SELECT 'If this line is a comment then nested commenting is enabled (and therefore broken).';


-- Optimizer hints
SELECT /*+ SEMIJOIN(FIRSTMATCH, LOOSESCAN) */ 1;
SELECT /*+ SET_VAR(foreign_key_checks=OFF) */ 1;


-- Literals
SELECT
    -- Integers
    123,

    -- Floats
    .123, 1.23, 123.,

    -- Exponents
    1e10, 1e-10, 1.e20, .1e-20,

    -- Hexadecimal
    X'0af019', x'0AF019', 0xaf019,

    -- Binary
    B'010', b'010', 0b010,

    -- Temporal literals
    {d'2020-01-01'}, { d ' 2020^01@01 ' },
    {t'8 9:10:11'}, { t ' 09:10:11.12 ' }, { t ' 091011 ' },
    {ts"2020-01-01 09:10:11"}, { ts ' 2020@01/01  09:10:11 ' },

    -- Strings
    '', 'abc', '1''2\03\%4\_5\\6\'7\"8',
    "", "abc", "1""2\03\%4\_5\\6\'7\"8",
;


-- Variables
SET @a = 1, @1 = 2, @._.$ = 3;
SET @'?' = 1, @'abc''def"`ghi' = 2;
SET @"#" = 1, @"abc""def'`ghi" = 2;
SET @`^` = 1, @`abc``def'"ghi` = 2;
SELECT
    @@timestamp,
    @@global.auto_increment_offset,
    @@session.auto_increment_offset,
    @@auto_increment_offset
;


-- Prepared statements
SELECT POW(?, 3) AS cubed;


-- Constants
SELECT TRUE, FALSE, NULL, UNKNOWN;


-- Data types
CREATE TABLE table1 (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(20) NOT NULL,
    birthyear YEAR
);


-- Keywords
INSERT INTO table1 (person, birthyear) VALUES ('abc', 2020);

WITH RECURSIVE example (n) AS (
    SELECT 1
    UNION ALL
    SELECT n + 1 FROM example
    WHERE n < 10
)
SELECT n FROM example;

SELECT 17 MEMBER OF ('[23, "abc", 17, "ab", 10]');


-- Functions
SELECT CONCAT('function');
SELECT MAX(quantity) FROM example;


-- Schema object names
CREATE TABLE basic (
    example INT,
    股票编号 INT,
    `select` INT,
    `concat(` INT
);

SELECT e1.`apple` AS a, `example2`.b
FROM example1 AS e1
JOIN example2 e2
ON `example1`.`a``b` = e2.`123`;


-- Operators
SELECT 1 + 2 - 3 << 2;
SELECT 1::DECIMAL(5, 2);
SET @a = 1;
SET a := 1;
SELECT c->>'$.name' FROM example;



-- Exceptions
CREATE TABLE t1
(
    c1 VARCHAR(5) CHARACTER SET latin1,
    c2 SET('r', 'g', 'b')
);


-- Introducers
SELECT _latin1'abc';
SELECT _binary'abc';

---tokens---
'-- Samples of MySQL parsing\n\n\n-- Comments\n# standalone comment line\n-- standalone comment line\nSELECT 1; -- trailing comment\nSELECT 1; # trailing comment\nSELECT 1; /* trailing comment */\nSELECT /* interruption */  /**/ 1;\n /*\n    Multiline / * / comment\n */\n /* /* MySQL does not support nested comments */\nSELECT \'If this line is a comment then nested commenting is enabled (and therefore broken).\';\n\n\n-- Optimizer hints\nSELECT /*+ SEMIJOIN(FIRSTMATCH, LOOSESCAN) */ 1;\nSELECT /*+ SET_VAR(foreign_key_checks=OFF) */ 1;\n\n\n-- Literals\nSELECT\n    -- Integers\n    123,\n\n    -- Floats\n    .123, 1.23, 123.,\n\n    -- Exponents\n    1e10, 1e-10, 1.e20, .1e-20,\n\n    -- Hexadecimal\n    X\'0af019\', x\'0AF019\', 0xaf019,\n\n    -- Binary\n    B\'010\', b\'010\', 0b010,\n\n    -- Temporal literals\n    {d\'2020-01-01\'}, { d \' 2020^01@01 \' },\n    {t\'8 9:10:11\'}, { t \' 09:10:11.12 \' }, { t \' 091011 \' },\n    {ts"2020-01-01 09:10:11"}, { ts \' 2020@01/01  09:10:11 \' },\n\n    -- Strings\n    \'\', \'abc\', \'1\'\'2\\03\\%4\\_5\\\\6\\\'7\\"8\',\n    "", "abc", "1""2\\03\\%4\\_5\\\\6\\\'7\\"8",\n;\n\n\n-- Variables\nSET @a = 1, @1 = 2, @._.$ = 3;\nSET @\'?\' = 1, @\'abc\'\'def"`ghi\' = 2;\nSET @"#" = 1, @"abc""def\'`ghi" = 2;\nSET @`^` = 1, @`abc``def\'"ghi` = 2;\nSELECT\n    @@timestamp,\n    @@global.auto_increment_offset,\n    @@session.auto_increment_offset,\n    @@auto_increment_offset\n;\n\n\n-- Prepared statements\nSELECT POW(?, 3) AS cubed;\n\n\n-- Constants\nSELECT TRUE, FALSE, NULL, UNKNOWN;\n\n\n-- Data types\nCREATE TABLE table1 (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    name VARCHAR(20) NOT NULL,\n    birthyear YEAR\n);\n\n\n-- Keywords\nINSERT INTO table1 (person, birthyear) VALUES (\'abc\', 2020);\n\nWITH RECURSIVE example (n) AS (\n    SELECT 1\n    UNION ALL\n    SELECT n + 1 FROM example\n    WHERE n < 10\n)\nSELECT n FROM example;\n\nSELECT 17 MEMBER OF (\'[23, "abc", 17, "ab", 10]\');\n\n\n-- Functions\nSELECT CONCAT(\'function\');\nSELECT MAX(quantity) FROM example;\n\n\n-- Schema object names\nCREATE TABLE basic (\n    example INT,\n    股票编号 INT,\n    `select` INT,\n    `concat(` INT\n);\n\nSELECT e1.`apple` AS a, `example2`.b\nFROM example1 AS e1\nJOIN example2 e2\nON `example1`.`a``b` = e2.`123`;\n\n\n-- Operators\nSELECT 1 + 2 - 3 << 2;\nSELECT 1::DECIMAL(5, 2);\nSET @a = 1;\nSET a := 1;\nSELECT c->>\'$.name\' FROM example;\n\n\n\n-- Exceptions\nCREATE TABLE t1\n(\n    c1 VARCHAR(5) CHARACTER SET latin1,\n    c2 SET(\'r\', \'g\', \'b\')\n);\n\n\n-- Introducers\nSELECT _latin1\'abc\';\nSELECT _binary\'abc\';\n' Text