The hierarchy of SQL expression

• scalar expr, single value know as field, or a list of single value know as a row
  • primary expr
    • value expr
      • literal
    • function call
  • binary expr
• query expr(table expr), a set of rows

Headings (# ## ### etc.)

Alt Heading 1 (Headings need 4 = or -)

Alt Heading 2 (Headings need 4 = or -)

Normal text bold then italic. Escape * ` < _ # \ & more.

1. Order list

• Unorder list ( - or + )

code: a === a

blockquote

URL: Edditoria | image:

Enjoy! :)