simple sqlite clone rust

https://www.sqlite.org/lang_select.html

https://btree.app/

////////////////////////////////////////// database page
page size                  2 bytes
locked                     1 bytes
File change counter        4 bytes
database pages             4 bytes
page size                  2 bytes
// btree data later





/////////////////////////////////////////// tables page
16 bytes of metadata
bytes 0 // 0 for database page 
        // 1 for tables page
bytes 1
bytes 2
bytes 3
bytes 4
bytes 5
bytes 6
bytes 7
bytes 8
bytes 9
bytes 10
bytes 11
bytes 12
bytes 13
bytes 14
bytes 15

page is tables page                 1 byte // 1
table id                            4 byte






/////////////////////////////////////////// data pages
page is tables page                 1 bytes // 0
table it belongs to                 4 bytes

features

• terminal navigation (rustyline)
• file init
• tokenizer
• parser
• query validation
  • select
    • check table exists
    • check selected columns exist
  • insert
  • update
  • delete
  • drop
• data pagination