diff --git a/README.md b/README.md index d629330..286a870 100644 --- a/README.md +++ b/README.md @@ -12,8 +12,20 @@ Windows installer can be found here: https://code.google.com/p/relational/downlo For Linux, check your distribution's packages, relational is available on Debian and Ubuntu. -Usage -===== +Syntax +====== + +These are some valid queries + +``` +σage > 25 and rank == weight(A) +σ (name.upper().startswith('J') and age>21 )(people) +Q ᐅᐊ π a,b(A) ᐅᐊ B +ρid➡i,name➡n(A) - π a,b(π a,b(A)) ᑎ σage > 25 or rank = weight(A) +π a,b(π a,b(A)) +ρid➡i,name➡n(π a,b(A)) +A ᐅᐊ B +``` Formal language definition at this link https://github.com/ltworf/relational/wiki/Grammar-and-language @@ -25,7 +37,9 @@ Run from sources To launch the application, run -```./relational_gui.py``` +``` +./relational_gui.py +``` If it needs some dependencies: Qt4, Python 2.7, either PyQT4 or Pyside.