diff --git a/corpus/IR_config b/corpus/IR_config
new file mode 100755
index 0000000000000000000000000000000000000000..b234045ca4c5c2d090e00ca90de589e0d3a70c5e
--- /dev/null
+++ b/corpus/IR_config
@@ -0,0 +1,921 @@
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diff --git a/corpus/initlib/init_lib b/corpus/initlib/init_lib
new file mode 100755
index 0000000000000000000000000000000000000000..0f64f085c538c2efbc3d520b49e13f032cbc93d1
--- /dev/null
+++ b/corpus/initlib/init_lib
@@ -0,0 +1,174 @@
+CREATE TABLE t0 ( c0 INT UNSIGNED NOT NULL) ;
+CREATE TABLE t0 ( c0 DOUBLE ( 1 , 1) VISIBLE ) ;
+CREATE TABLE t0 ( c0 DECIMAL ( 1 ) DEFAULT ( 1 ) ) ;
+CREATE TABLE t0 ( c0 BOOL ) ;
+CREATE TABLE t0 ( c0 CHAR ) ;
+CREATE TABLE t0 ( c0 INT , INDEX i0 ( c0 ASC ) ) ;
+CREATE TABLE t0 ( c0 TEXT , INDEX i0 ( c0 ( 1 ) ) ) ;
+CREATE TABLE t0 ( c0 INT , INDEX i0 ( ( c0 + 1 ) ) ) ;
+CREATE TABLE t0 ( c0 INT , CONSTRAINT cc0 UNIQUE i0 ( c0 ) ) ;
+CREATE TABLE t0 ( c0 INT , CONSTRAINT cc0 CHECK ( c0 = 1 ) ) ;
+CREATE TABLE t0 ( c0 INT , c1 INT , UNIQUE ( c1 ) , CONSTRAINT cc0 FOREIGN KEY i0 ( c0 ) REFERENCES t0 ( c1 ) ON UPDATE CASCADE ON DELETE CASCADE ) ;
+CREATE TABLE t0 REPLACE AS SELECT 1 ;
+CREATE OR REPLACE ALGORITHM = TEMPTABLE VIEW v0 ( c0 , c1 ) AS SELECT 1 , 2 ;
+CREATE UNIQUE INDEX i0 ON t0 ( c0 ) ;
+DROP INDEX i0 ON t0 ;
+DROP TABLE IF EXISTS t0 , t1 ;
+DROP VIEW IF EXISTS v0 , v1 ;
+DELETE QUICK FROM t0 LIMIT 1 ;
+DELETE t0 FROM t0 ;
+UPDATE t0 SET c0 = 1 ;
+INSERT INTO t0 ( c0 ) VALUES ( 1 ) AS t1 ( c1 ) ON DUPLICATE KEY UPDATE c0 = 1 ;
+INSERT INTO t0 SET c0 = 1 ;
+INSERT INTO t0 ( c1 ) SELECT 1 ;
+ALTER TABLE t0 ADD COLUMN c1 INT AFTER c0 ;
+ALTER TABLE t0 ADD COLUMN ( c1 INT , UNIQUE ( c1 ) ) ;
+ALTER TABLE t0 ADD UNIQUE ( c0 ) ;
+ALTER TABLE t0 CHANGE COLUMN c0 c1 INT ;
+ALTER TABLE t0 MODIFY COLUMN c0 INT FIRST;
+ALTER TABLE t0 DROP COLUMN c0 ;
+ALTER TABLE t0 DROP FOREIGN KEY cc0 ;
+ALTER TABLE t0 DROP PRIMARY KEY ; 
+ALTER TABLE t0 DROP INDEX i0 ;
+ALTER TABLE t0 DROP CHECK cc0 ;
+ALTER TABLE t0 DROP CONSTRAINT cc0 ;
+ALTER TABLE t0 ALTER COLUMN c0 SET DEFAULT ( 1 ) ;
+ALTER TABLE t0 ALTER COLUMN c0 DROP DEFAULT ;
+ALTER TABLE t0 ALTER COLUMN c0 SET INVISIBLE ;
+ALTER TABLE t0 ALTER INDEX i0 INVISIBLE ;
+ALTER TABLE t0 RENAME TO t1 ;
+ALTER TABLE t0 RENAME INDEX i0 TO i1 ;
+ALTER TABLE t0 RENAME COLUMN c0 TO c1 ;
+SELECT c0 FROM t0 ORDER BY c0 LIMIT 1 ;
+( SELECT c0 FROM t0 ) ORDER BY c0 LIMIT 1 ;
+SELECT c0 FROM t0 UNION SELECT c0 FROM t0 ;
+SELECT SQL_NO_CACHE c0 AS c1 FROM ( SELECT c0 FROM t0 ) AS t1 ( c2 ) WHERE c1 = 0 GROUP BY c1 HAVING c1 = 0 ;
+SELECT c0 FROM t0 WINDOW w0 AS ( PARTITION BY c0  RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING ) ;
+SELECT t0 . c0 FROM ( t0 CROSS JOIN t0 AS t1 ) ;
+SELECT t0 . c0 FROM ( t0 , t0 AS t1 ) ;
+SELECT t0 . c0 FROM t0 INNER JOIN t0 AS t1 ON t0 . c0 = t1 . c0 ;
+SELECT t0 . c0 FROM t0 INNER JOIN t0 AS t1 USING ( c0 ) ;
+SELECT t0 . c0 FROM t0 INNER JOIN t0 AS t1 ;
+SELECT t0 . c0 FROM t0 LEFT OUTER JOIN t0 AS t1 ON t0 . c0 = t0 . c1 ;
+SELECT t0 . c0 FROM t0 NATURAL INNER JOIN t0 AS t1 ;
+WITH t1 ( c1 ) AS ( SELECT 1 ) SELECT c1 FROM t1 ;
+WITH RECURSIVE t1 ( c1 ) AS ( SELECT 1 UNION SELECT c1 + 1 FROM t1 WHERE c1 < 10 ) SELECT c1 FROM t1 ;
+SELECT * FROM t0 ;
+SELECT c0 = ( SELECT c0 FROM t0 LIMIT 1 ) FROM t0 ;
+SELECT c0 = ALL ( SELECT c0 FROM t0 ) FROM t0 ;
+SELECT c0 IN ( SELECT c0 FROM t0 ) FROM t0 ;
+SELECT TRUE ;
+SELECT 1 ;
+SELECT 1.1 ;
+SELECT 'string' ;
+SELECT CAST ( c0 AS UNSIGNED ) FROM t0 ;
+SELECT CONVERT ( c0 , UNSIGNED ) FROM t0 ;
+SELECT CASE c0 WHEN 1 THEN 1 ELSE 2 END FROM t0 ;
+SELECT DEFAULT ( c0 ) FROM t0 ;
+SELECT IF ( c0 , c0 , 1 ) FROM t0 ;
+SELECT IFNULL ( c0 , 1 ) FROM t0 ;
+SELECT NULLIF ( c0 , 1 ) FROM t0 ;
+SELECT PI ( ) ;
+SELECT RAND ( ) ;
+SELECT ABS ( c0 ) FROM t0 ;
+SELECT ACOS ( c0 ) FROM t0 ;
+SELECT ASIN ( c0 ) FROM t0 ;
+SELECT ATAN ( c0 ) FROM t0 ;
+SELECT CEILING ( c0 ) FROM t0 ;
+SELECT COS ( c0 ) FROM t0 ;
+SELECT COT ( c0 ) FROM t0 ;
+SELECT DEGREES ( c0 ) FROM t0 ;
+SELECT EXP ( c0 ) FROM t0 ;
+SELECT FLOOR ( c0 ) FROM t0 ;
+SELECT HEX ( c0 ) FROM t0 ;
+SELECT LN ( c0 ) FROM t0 ;
+SELECT RADIANS ( c0 ) FROM t0 ;
+SELECT RAND ( c0 ) FROM t0 ;
+SELECT ROUND ( c0 ) FROM t0 ;
+SELECT SIGN ( c0 ) FROM t0 ;
+SELECT SIN ( c0 ) FROM t0 ;
+SELECT SQRT ( c0 ) FROM t0 ;
+SELECT TAN ( c0 ) FROM t0 ;
+SELECT ATAN ( 1 , 1 );
+SELECT FORMAT ( 1 , 1 );
+SELECT LOG ( 1 , 1 );
+SELECT MOD ( 1 , 1 );
+SELECT POW ( 1 , 1 );
+SELECT ROUND ( 1 , 1 );
+SELECT TRUNCATE ( 1 , 1 );
+SELECT CONV ( 1 , 1 , 1 ) ;
+SELECT ASCII ( c0 ) FROM t0 ;
+SELECT BIN ( c0 ) FROM t0 ;
+SELECT BIT_LENGTH ( c0 ) FROM t0 ;
+SELECT CHAR_LENGTH ( c0 ) FROM t0 ;
+SELECT LENGTH ( c0 ) FROM t0 ;
+SELECT LOWER ( c0 ) FROM t0 ;
+SELECT LTRIM ( c0 ) FROM t0 ;
+SELECT OCT ( c0 ) FROM t0 ;
+SELECT ORD ( c0 ) FROM t0 ;
+SELECT QUOTE ( c0 ) FROM t0 ;
+SELECT REVERSE ( c0 ) FROM t0 ;
+SELECT RTRIM ( c0 ) FROM t0 ;
+SELECT SPACE ( c0 ) FROM t0 ;
+SELECT TRIM( c0 ) FROM t0 ;
+SELECT TRIM( LEADING FROM c0 ) FROM t0 ;
+SELECT TRIM( TRAILING FROM c0 ) FROM t0 ;
+SELECT UNHEX ( c0 ) FROM t0 ;
+SELECT UPPER ( c0 ) FROM t0 ;
+SELECT FIND_IN_SET ( c0 , 'str' ) FROM t0 ;
+SELECT INSTR ( c0 , 'str' ) FROM t0 ;
+SELECT LEFT ( c0 , 'str' ) FROM t0 ;
+SELECT LOCATE ( c0 , 'str' ) FROM t0 ;
+SELECT REPEAT ( c0 , 'str' ) FROM t0 ;
+SELECT RIGHT ( c0 , 'str' ) FROM t0 ;
+SELECT SUBSTRING( c0 , 'str' ) FROM t0 ;
+SELECT TRIM( LEADING c0 FROM 'str' ) FROM t0 ;
+SELECT TRIM( TRAILING c0 FROM 'str' ) FROM t0 ;
+SELECT TRIM( c0 FROM 'str' ) FROM t0 ;
+SELECT EXPORT_SET ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT LOCATE ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT LPAD ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT REPLACE ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT RPAD ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT SUBSTRING( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT SUBSTRING_INDEX ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT EXPORT_SET ( c0 , 'str' , 'str' , 'str' ) FROM t0 ;
+SELECT INSERT ( c0 , 'str' , 'str' , 'str' ) FROM t0 ;
+SELECT EXPORT_SET ( c0 , 'str' , 'str' , 'str' , 'str' ) FROM t0 ;
+SELECT CHAR ( c0 , 'str' ) FROM t0 ;
+SELECT CONCAT ( c0 , 'str' ) FROM t0 ;
+SELECT CONCAT_WS ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT ELT ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT FIELD ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT MAKE_SET ( c0 , 'str' , 'str' ) FROM t0 ;
+SELECT AVG ( c0 ) FROM t0 ;
+SELECT BIT_AND( c0 ) FROM t0 ;
+SELECT BIT_OR( c0 ) FROM t0 ;
+SELECT BIT_XOR( c0 ) FROM t0 ;
+SELECT COUNT( * ) FROM t0 ;
+SELECT COUNT( c0 ) FROM t0 ;
+SELECT COUNT( DISTINCT c0 , 1 ) FROM t0 ;
+SELECT MIN( c0 ) FROM t0 ;
+SELECT MAX( c0 ) FROM t0 ;
+SELECT SUM( c0 ) FROM t0 ;
+SELECT STD( c0 ) FROM t0 ;
+SELECT STDDEV_SAMP( c0 ) FROM t0 ;
+SELECT VARIANCE( c0 ) FROM t0 ;
+SELECT VAR_SAMP( c0 ) FROM t0 ;
+SELECT GROUP_CONCAT( c0 , 1 ORDER BY c0 SEPARATOR ',' ) FROM t0 ;
+SELECT ROW_NUMBER ( ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT RANK ( ) OVER ( PARTITION BY c0 ) FROM t0 ;
+SELECT DENSE_RANK ( ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT CUME_DIST ( ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT PERCENT_RANK ( ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT NTILE ( 1 ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT LEAD ( c0 , 1 ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT LAG ( c0 , 1 ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT FIRST_VALUE ( c0 ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT LAST_VALUE ( c0 ) OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT NTH_VALUE ( c0 , 1 ) FROM FIRST RESPECT NULLS OVER w0 FROM t0 WINDOW w0 AS ( PARTITION BY c0 ) ;
+SELECT 1 IN ( 1 , 2 , 3) ;
+SELECT 1 NOT IN ( 1 , 2 , 3) ;
+SELECT 1 BETWEEN 1 AND 2 ;
+SELECT 1 NOT BETWEEN 1 AND 2 ;
+SELECT 1 FROM t0 LEFT OUTER JOIN t1 USING ( c0 ) ;
\ No newline at end of file
diff --git a/corpus/input/alter_stmt b/corpus/input/alter_stmt
new file mode 100755
index 0000000000000000000000000000000000000000..a5ca0a56f17c4bf843766cbfb7de26893a17fe15
--- /dev/null
+++ b/corpus/input/alter_stmt
@@ -0,0 +1,5 @@
+CREATE TABLE t0 ( c0 INT , c1 INT ) ;
+INSERT INTO t0 VALUES ( 1 , 2 ) , ( 3 , 4 ) ;
+ALTER TABLE t0 ADD COLUMN c2 INT AFTER c0 ;
+INSERT INTO t0 VALUES ( 1 , 2 , 3 ) , ( 3 , 4 , 5 ) ;
+SELECT t0 . c0 FROM ( SELECT c1 FROM t0 ) AS t1 JOIN t0 ON t1 . c1 = t0 . c1 ;
\ No newline at end of file
diff --git a/corpus/input/create_index b/corpus/input/create_index
new file mode 100755
index 0000000000000000000000000000000000000000..0e9e16c7c1f578eea01f75cbf67c1de900fded88
--- /dev/null
+++ b/corpus/input/create_index
@@ -0,0 +1,5 @@
+CREATE TABLE t0 ( c0 INT , c1 INT ) ;
+INSERT INTO t0 VALUES ( 1 , 2 ) , ( 3 , 4 ) ;
+CREATE INDEX i0 ON t0 ( c0 ) ;
+INSERT INTO t0 VALUES ( 5 , 6 ) , ( 7 , 8 ) ;
+SELECT t0 . c0 FROM ( SELECT c1 FROM t0 ) AS t1 JOIN t0 ON t1 . c1 = t0 . c1 ;
\ No newline at end of file
diff --git a/corpus/input/create_table b/corpus/input/create_table
new file mode 100755
index 0000000000000000000000000000000000000000..b308ab503eada3e45f062b182d61fe8080051d93
--- /dev/null
+++ b/corpus/input/create_table
@@ -0,0 +1,5 @@
+CREATE TABLE t0 ( c0 INT , c1 INT ) ;
+CREATE TABLE t1 ( c0 INT , c1 INT ) ;
+INSERT INTO t0 VALUES ( 1 , 2 ) , ( 3 , 4 ) ;
+INSERT INTO t0 VALUES ( 5 , 6 ) , ( 7 , 8 ) ;
+SELECT t0 . c0 FROM t0 CROSS JOIN t1 ;
\ No newline at end of file
diff --git a/corpus/input/create_view b/corpus/input/create_view
new file mode 100755
index 0000000000000000000000000000000000000000..90504ac4901d2150444362e4603d251099901c57
--- /dev/null
+++ b/corpus/input/create_view
@@ -0,0 +1,4 @@
+CREATE TABLE t0 ( c0 INT , c1 INT ) ;
+INSERT INTO t0 VALUES ( 1 , 2 ) , ( 3 , 4 ) ;
+CREATE VIEW v0 AS SELECT c0 , c1 , 1 AS c2 FROM t0 ;
+WITH t1 AS ( SELECT 1 AS c0 , 2 AS c2 ) SELECT t0 . c0 FROM t0 JOIN t1 ON t0 . c1 = t1 . c2 WHERE t0 . c0 = 0 ;
diff --git a/corpus/input/delete_stmt b/corpus/input/delete_stmt
new file mode 100755
index 0000000000000000000000000000000000000000..ae2f664e6ba34c8ae4d2e4b1c5a38b411fe3de58
--- /dev/null
+++ b/corpus/input/delete_stmt
@@ -0,0 +1,4 @@
+CREATE TABLE t0 ( c0 INT , c1 INT ) ;
+INSERT INTO t0 VALUES ( 1 , 2 ) , ( 3 , 4 ) ;
+DELETE FROM t0 WHERE c0 = 1 ;
+SELECT t0 . c0 FROM t0 AS t1 JOIN t0 ON t1 . c1 = t0 . c1 ;
\ No newline at end of file
diff --git a/corpus/input/update b/corpus/input/update
new file mode 100755
index 0000000000000000000000000000000000000000..b3d7d3567c2c62dd08662b8dcc41ede1140f3833
--- /dev/null
+++ b/corpus/input/update
@@ -0,0 +1,4 @@
+CREATE TABLE t0 ( c0 INT , c1 INT ) ;
+INSERT INTO t0 VALUES ( 1 , 2 ) , ( 3 , 4 ) ;
+UPDATE t0 SET c0 = 5 WHERE c0 = 1 ;
+WITH t1 AS ( SELECT c0 AS c2 FROM t0 ) SELECT c0 FROM t0 CROSS JOIN t1 WHERE c2 = 2 ;
\ No newline at end of file