From b3a98360d25eb3a8e774e80463f1582f0c18a99f Mon Sep 17 00:00:00 2001
From: "a.sabirov" <a.sabirov@picodata.io>
Date: Fri, 26 Jul 2024 15:27:11 +0300
Subject: [PATCH] query.ebnf: add `scan` diagram
Definition:
https://git.picodata.io/picodata/picodata/sbroad/-/blob/b1b021bff1ea23aa8d0fb74a0ed0fd409043a6bb/sbroad-core/src/frontend/sql/query.pest#L186
---
doc/sql/query.ebnf | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/doc/sql/query.ebnf b/doc/sql/query.ebnf
index c9f9535fa0..b701c230c8 100644
--- a/doc/sql/query.ebnf
+++ b/doc/sql/query.ebnf
@@ -11,10 +11,10 @@ cte ::= ('WITH'
(',' cte ('(' column (',' column)* ')')? 'AS' '(' (select | values) ')')*
)? select
select ::= 'SELECT' 'DISTINCT'? ((projection (',' projection)*))
- 'FROM' (table | ('(' (select | values) ')')) (('AS')? name)?
+ 'FROM' scan
(
('INNER' | ('LEFT' ('OUTER')?))? 'JOIN' (
- ((table | ('(' (select | values) ')')) (('AS')? name)?)
+ (scan)
)
'ON' expression
)*
@@ -24,6 +24,7 @@ select ::= 'SELECT' 'DISTINCT'? ((projection (',' projection)*))
('ORDER' 'BY' (expression ('ASC' | 'DESC')?) (',' expression ('ASC' | 'DESC')?)*)?
((('UNION' 'ALL'?) | ('EXCEPT' 'DISTINCT'?)) select)*
projection ::= (table '.')? '*' | expression (('AS')? name)? | aggregate
+scan ::= (table | '(' (select | values) ')') ('AS'? name)?
expression ::= (table '.')? column
| expression ('IS' ('NOT')? 'NULL')
| expression ('OR' | 'AND' | '*' | '/' | '+' | '-' | '=' | '>' | '<' | '>=' | '<=' | ('<>' | '!=')) expression
@@ -73,7 +74,7 @@ update ::= 'UPDATE' table
column '=' expression
(',' column '=' expression)*
)
- ('FROM' '(' (select | values) ')' (('AS')? name)?)? ('WHERE' expression)?
+ ('FROM' scan)? ('WHERE' expression)?
acl ::= (alter_user | create_role | create_user | drop_role | drop_user | grant | revoke)
('OPTION' '(' ('TIMEOUT' '=' double)')')?
--
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