srielau commented on code in PR #49427:
URL: https://github.com/apache/spark/pull/49427#discussion_r1920340784


##########
sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4:
##########
@@ -79,6 +81,29 @@ setStatementWithOptionalVarKeyword
         LEFT_PAREN query RIGHT_PAREN                            
#setVariableWithOptionalKeyword
     ;
 
+sqlStateValue
+    : stringLit
+    ;
+
+declareConditionStatement
+    : DECLARE multipartIdentifier CONDITION (FOR SQLSTATE VALUE? 
sqlStateValue)?
+    ;
+
+conditionValue
+    : sqlStateValue
+    | multipartIdentifier
+    | SQLEXCEPTION
+    | NOT FOUND
+    ;
+
+conditionValues
+    : cvList+=conditionValue (COMMA cvList+=conditionValue)*
+    ;
+
+declareHandlerStatement
+    : DECLARE (CONTINUE | EXIT) HANDLER FOR conditionValues (BEGIN 
compoundBody END | statement | setStatementWithOptionalVarKeyword)

Review Comment:
   The handler action (SQL/PSM 15.2) is simply:
   <handler action> ::=
     <SQL procedure statement>
   
   So there is nothing special about the compound statement, if it's used. It 
can include a label.



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