Module: SQLPP
- Defined in:
- lib/sqlpp/parser.rb,
lib/sqlpp.rb,
lib/sqlpp/ast.rb,
lib/sqlpp/version.rb,
lib/sqlpp/formatter.rb,
lib/sqlpp/tokenizer.rb
Overview
select := ‘SELECT’
optional_projections
optional_froms
optional_wheres
optional_groups
optional_orders
optional_projections := ”
| list
optional_froms := ”
| 'FROM' froms
optional_wheres := ”
| 'WHERE' expr1
optional_groups := ”
| 'GROUP' 'BY' list
optional_orders := ”
| 'ORDER' 'BY' sort_keys
sort_keys := sort_key
| sort_key ',' sort_keys
sort_key := expr1
| expr1 sort_options
sort_options := sort_option
| sort_option ' ' sort_options
sort_option := ‘ASC’ | ‘DESC’ | ‘NULLS FIRST’ | ‘NULLS LAST’
froms := from
| from ',' froms
from := entity
| entity optional_join_expr
optional_join_expr := ”
| 'LEFT' 'JOIN' from 'ON' expr
| 'INNER' 'JOIN' from 'ON' expr
| 'OUTER' 'JOIN' from 'ON' expr
| 'FULL' 'OUTER' 'JOIN' from 'ON' expr
entity := ‘(’ from ‘)’
| id
| select_stmt
expr1 := expr2
| expr2 op expr1
op := ‘AND’ | ‘OR’ | ‘IS’ | ‘IS NOT’
expr2 := expr3
| expr3 'BETWEEN' expr3 AND expr3
| expr3 'IN' '(' list ')'
| expr3 bop expr3
bop := ‘<’ | ‘<=’ | ‘<>’ | ‘=’ | ‘>=’ | ‘>’
expr3 := expr4
| expr4 op2 expr3
| unary expr3
op2 := ‘+’ | ‘-’ | ‘*’ | ‘/’
unary := ‘+’ | ‘-’ | ‘NOT’
expr4 := lit
| id
| id '.' id
| id '(' args ')'
| 'CASE' case_stmt 'END'
| '(' expr1 ')'
list := expr1
| expr1 ',' list
Defined Under Namespace
Modules: AST, Version Classes: Exception, Formatter, Parser, Tokenizer