fix(guide): simplify directory structure

guide/english/sql/sql-insert-into-statement/index.md

@@ -0,0 +1,44 @@
+---
+title: SQL Insert into Statement
+---
+## SQL Insert into Statement
+
+To insert a record in a table you use the `INSERT INTO` statement. 
+
+You can do it in two ways, if you want to insert values only in some columns, you have to list their names including all mandatory columns.  The syntax is:
+
+```sql
+INSERT INTO table_name (column1, column2, column3, ...)
+VALUES (value1, value2, value3, ...);
+```
+
+The other way is inserting values to all columns in the table, it is not necessary to specify the columns names. The syntax is:
+ 
+```sql
+INSERT INTO table_name 
+VALUES (value1, value2, value3, ...);
+```
+
+Here’s an example inserting a record in the table Person in both ways:
+```sql
+INSERT INTO Person
+VALUES (1, ‘John Lennon’, ‘1940-10-09’, ‘M’);
+```
+
+And
+
+```sql
+INSERT INTO Person(Id, Name, DateOfBirth, Gender)
+VALUES (1, ‘John Lennon’, ‘1940-10-09’, ‘M’);
+```
+
+Some SQL versions (for example, MySQL) support inserting multiple rows at once.  For example: 
+
+```sql
+INSERT INTO Person(Id, Name, DateOfBirth, Gender)
+VALUES (1, ‘John Lennon’, ‘1940-10-09’, ‘M’), (2, ‘Paul McCartney’, ‘1942-06-18’, ‘M’),
+(3, ‘George Harrison’, ‘1943-02-25’, ‘M’), (4, ‘Ringo Starr’, ‘1940-07-07’, ‘M’)
+```
+
+Note that the entire original query remains intact - we simple add on data rows encloded by paranthesis and separated by commas.
+