ebnf update (#17099)

pingcap · Apr 22, 2024 · a856870 · a856870
1 parent 39a02d4
commit a856870
Showing 1 changed file with 13 additions and 20 deletions.
diff --git a/sql-statements/sql-statement-update.md b/sql-statements/sql-statement-update.md
@@ -10,29 +10,22 @@ The `UPDATE` statement is used to modify data in a specified table.
 
 ## Synopsis
 
-**UpdateStmt:**
+```ebnf+diagram
+UpdateStmt ::=
+    "UPDATE" UpdateOption
+(   TableRef "SET" Assignment ("," Assignment)* WhereClause? OrderBy? Limit?
+|   TableRefs "SET" Assignment ("," Assignment)* WhereClause?
+)
 
-![UpdateStmt](/media/sqlgram/UpdateStmt.png)
+UpdateOption ::=
+    OptimizerHints? ("LOW_PRIORITY" | "HIGH_PRIORITY" | "DELAYED")? "IGNORE"?
 
-**PriorityOpt:**
+TableRef ::=
+    ( TableFactor | JoinTable )
 
-![PriorityOpt](/media/sqlgram/PriorityOpt.png)
-
-**TableRef:**
-
-![TableRef](/media/sqlgram/TableRef.png)
-
-**TableRefs:**
-
-![TableRefs](/media/sqlgram/TableRefs.png)
-
-**AssignmentList:**
-
-![AssignmentList](/media/sqlgram/AssignmentList.png)
-
-**WhereClauseOptional:**
-
-![WhereClauseOptional](/media/sqlgram/WhereClauseOptional.png)
+TableRefs ::=
+    EscapedTableRef ("," EscapedTableRef)*
+```
 
 ## Examples