Merge "syncbase: syqnQL: query_parser/doc.go: doc.go syntax update"
diff --git a/v23/syncbase/nosql/internal/query/query_parser/doc.go b/v23/syncbase/nosql/internal/query/query_parser/doc.go
index 6e09680..915ac29 100644
--- a/v23/syncbase/nosql/internal/query/query_parser/doc.go
+++ b/v23/syncbase/nosql/internal/query/query_parser/doc.go
@@ -8,11 +8,24 @@
// The select is of the form:
//
// <query_specification> ::=
-// SELECT <field_clause> <from_clause> [<where_clause>] [<limit_offset_clause>]
+// <select_clause> <from_clause> [<where_clause>] [<limit_offset_clause>]
//
-// <field_clause> ::= <column>[{<comma><field>}...]
+// <select_clause> ::= SELECT <selector> [{<comma><selector>}...]
//
-// <column> ::= <field> [AS <string_literal>]
+// <from_clause> ::= FROM <table>
+//
+// <where_clause> ::= WHERE <expression>
+//
+// <limit_offset_clause> ::=
+// LIMIT <int_literal> [OFFSET <int_literal>]
+// | OFFSET <int_literal> [LIMIT <int_literal>]
+//
+// <selector> ::= <column> [AS <string_literal>]
+//
+// <column> ::=
+// K
+// | V[<period><field>]
+// | <function>
//
// <field> ::= <segment>[{<period><segment>}...]
//
@@ -22,22 +35,12 @@
//
// <key> ::= <left_bracket> <operand> <right_bracket>
//
-// <from_clause> ::= FROM <table>
+// <function> ::= <identifier><left_paren>[<operand>[{<comma><operand>}...]<right_paren>
//
// <table> ::= <identifier>
//
-// <where_clause> ::= WHERE <expression>
-//
-// <limit_offset_clause> ::=
-// <limit_clause> [<offset_clause>]
-// | <offset_clause> [<limit_clause>]
-//
-// <limit_clause> ::= LIMIT <int_literal>
-//
-// <offset_clause> ::= OFFSET <int_literal>
-//
// <expression> ::=
-// ( <expression> )
+// <left_paren> <expression> <right_paren>
// | <logical_expression>
// | <binary_expression>
//
@@ -50,25 +53,33 @@
//
// <binary_expression> ::=
// <operand> <binary_op> <operand>
+// | V[<period><field>] IS [NOT] NIL
//
// <operand> ::=
-// <field>
+// K
+// | V[<period><field>]
+// | T
// | <literal>
+// | <function>
//
// <binary_op> ::=
// =
-// | <>
-// | <
-// | >
-// | <=
-// | >=
// | EQUAL
+// | <>
// | NOT EQUAL
// | LIKE
// | NOT LIKE
+// | <
+// | <=
+// | >=
+// | >
//
-// <literal> ::= <string_literal> | <char_literal> | <int_literal> | <float_literal>
+// <literal> ::=
+// <string_literal>
+// | <bool_literal>
+// | <int_literal>
+// | <float_literal>
//
// Example:
-// select foo.bar, baz from foobarbaz where foo = 42 and bar not like "abc%"
+// select v.foo.bar, v.baz[2] from foobarbaz where (v.foo = 42 and v.bar not like "abc%) or (k >= "100" and k < "200")
package query_parser
