David Capwell created CASSANDRA-17919:
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Summary: Capital P gets confused in the parser for a Duration in
places where IDENT are needed
Key: CASSANDRA-17919
URL: https://issues.apache.org/jira/browse/CASSANDRA-17919
Project: Cassandra
Issue Type: Bug
Components: CQL/Syntax
Reporter: David Capwell
This was found while adding Accord Transaction syntax into CQL and fuzz testing
to validate all possible cases… in doing this the following was found
{code}
String query = "BEGIN TRANSACTION\n" +
" LET P = (SELECT v FROM " + keyspace + ".tbl WHERE
k=? AND c=?);\n" +
" LET row2 = (SELECT v FROM " + keyspace + ".tbl
WHERE k=? AND c=?);\n" +
" SELECT v FROM " + keyspace + ".tbl WHERE k=? AND
c=?;\n" +
" IF P IS NULL AND row2.v = ? THEN\n" +
" INSERT INTO " + keyspace + ".tbl (k, c, v)
VALUES (?, ?, ?);\n" +
" END IF\n" +
"COMMIT TRANSACTION";
{code}
Fails with
{code}
SyntaxException: line 2:6 mismatched input 'P' expecting IDENT (BEGIN
TRANSACTION LET [P]...)
{code}
The new LET syntax found this, but was able to reproduce in other cases
{code}
cqlsh:ks> CREATE TABLE P (k INT PRIMARY KEY);
SyntaxException: line 1:13 no viable alternative at input 'P' (CREATE TABLE
[P]...)
cqlsh:ks>
cqlsh:ks> CREATE TABLE p (k INT PRIMARY KEY);
cqlsh:ks>
{code}
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