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https://issues.apache.org/jira/browse/PHOENIX-3042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15370703#comment-15370703
]
James Taylor commented on PHOENIX-3042:
---------------------------------------
Looks like even with your patch the functional index isn't being used (though
the exception doesn't occur). Here's a QueryCompilerTest you can play with,
[~tdsilva]:
{code}
@Test
public void testFuncIndexUsage() throws SQLException {
Connection conn = DriverManager.getConnection(getUrl());
try {
conn.createStatement().execute("CREATE TABLE t1(k INTEGER PRIMARY
KEY,"+
" col1 VARCHAR, col2 VARCHAR)");
conn.createStatement().execute("CREATE TABLE t2(k INTEGER PRIMARY
KEY," +
" col1 VARCHAR, col2 VARCHAR)");
conn.createStatement().execute("CREATE TABLE t3(j INTEGER PRIMARY
KEY," +
" col3 VARCHAR, col4 VARCHAR)");
conn.createStatement().execute("CREATE INDEX idx ON t1 (col1 ||
col2)");
String query = "SELECT a.k from t1 a where a.col1 || a.col2 =
'foobar'";
ResultSet rs = conn.createStatement().executeQuery("EXPLAIN
"+query);
String explainPlan = QueryUtil.getExplainPlan(rs);
assertEquals("CLIENT PARALLEL 1-WAY RANGE SCAN OVER IDX
['foobar']\n" +
" SERVER FILTER BY FIRST KEY ONLY",explainPlan);
query = "SELECT k,j from t3 b join t1 a ON k = j where a.col1 ||
a.col2 = 'foobar'";
rs = conn.createStatement().executeQuery("EXPLAIN "+query);
explainPlan = QueryUtil.getExplainPlan(rs);
assertEquals("CLIENT PARALLEL 1-WAY FULL SCAN OVER T3\n" +
" SERVER FILTER BY FIRST KEY ONLY\n" +
" PARALLEL INNER-JOIN TABLE 0\n" +
" CLIENT PARALLEL 1-WAY RANGE SCAN OVER IDX
['foobar']\n" +
" SERVER FILTER BY FIRST KEY ONLY\n" +
" DYNAMIC SERVER FILTER BY B.J IN (A.K)",explainPlan);
query = "SELECT a.k,b.k from t2 b join t1 a ON a.k = b.k where
a.col1 || a.col2 = 'foobar'";
rs = conn.createStatement().executeQuery("EXPLAIN "+query);
explainPlan = QueryUtil.getExplainPlan(rs);
assertEquals("CLIENT PARALLEL 1-WAY FULL SCAN OVER T2\n" +
" SERVER FILTER BY FIRST KEY ONLY\n" +
" PARALLEL INNER-JOIN TABLE 0\n" +
" CLIENT PARALLEL 1-WAY RANGE SCAN OVER IDX
['foobar']\n" +
" SERVER FILTER BY FIRST KEY ONLY\n" +
" DYNAMIC SERVER FILTER BY B.K IN (A.K)",explainPlan);
} finally {
conn.close();
}
}
{code}
> Using local index on the expression in where statement for join query fails.
> -----------------------------------------------------------------------------
>
> Key: PHOENIX-3042
> URL: https://issues.apache.org/jira/browse/PHOENIX-3042
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.8.0
> Reporter: Sergey Soldatov
> Assignee: Thomas D'Silva
> Fix For: 4.9.0
>
> Attachments: PHOENIX-3042.patch
>
>
> A simple scenario:
> {noformat}
> CREATE TABLE customer_phx ( c_customer_sk varchar primary key, c_first_name
> varchar, c_last_name varchar );
> UPSERT INTO customer_phx values ( '1', 'David', 'Smith');
> CREATE LOCAL INDEX CUSTINDEX ON customer_phx (c_customer_sk || c_first_name
> asc) include (c_customer_sk);
> select c.c_customer_sk from customer_phx c left outer join customer_phx c2
> on c.c_customer_sk = c2.c_customer_sk where c.c_customer_sk || c.c_first_name
> = '1David';
> {noformat}
> It fails with an Exception :
> {noformat}
> Error: ERROR 504 (42703): Undefined column. columnName=C_FIRST_NAME
> (state=42703,code=504)
> org.apache.phoenix.schema.ColumnNotFoundException: ERROR 504 (42703):
> Undefined column. columnName=C_FIRST_NAME
> at
> org.apache.phoenix.compile.WhereCompiler$WhereExpressionCompiler.resolveColumn(WhereCompiler.java:190)
> at
> org.apache.phoenix.compile.WhereCompiler$WhereExpressionCompiler.visit(WhereCompiler.java:169)
> at
> org.apache.phoenix.compile.WhereCompiler$WhereExpressionCompiler.visit(WhereCompiler.java:156)
> at
> org.apache.phoenix.parse.ColumnParseNode.accept(ColumnParseNode.java:56)
> at
> org.apache.phoenix.parse.CompoundParseNode.acceptChildren(CompoundParseNode.java:64)
> at
> org.apache.phoenix.parse.StringConcatParseNode.accept(StringConcatParseNode.java:46)
> at
> org.apache.phoenix.parse.CompoundParseNode.acceptChildren(CompoundParseNode.java:64)
> at
> org.apache.phoenix.parse.ComparisonParseNode.accept(ComparisonParseNode.java:45)
> at
> org.apache.phoenix.compile.WhereCompiler.compile(WhereCompiler.java:130)
> at
> org.apache.phoenix.compile.WhereCompiler.compile(WhereCompiler.java:100)
> at
> org.apache.phoenix.compile.QueryCompiler.compileSingleFlatQuery(QueryCompiler.java:556)
> at
> org.apache.phoenix.compile.QueryCompiler.compileJoinQuery(QueryCompiler.java:324)
> at
> org.apache.phoenix.compile.QueryCompiler.compileSelect(QueryCompiler.java:200)
> at
> org.apache.phoenix.compile.QueryCompiler.compile(QueryCompiler.java:157)
> at
> org.apache.phoenix.jdbc.PhoenixStatement$ExecutableSelectStatement.compilePlan(PhoenixStatement.java:404)
> at
> org.apache.phoenix.jdbc.PhoenixStatement$ExecutableSelectStatement.compilePlan(PhoenixStatement.java:378)
> at
> org.apache.phoenix.jdbc.PhoenixStatement$1.call(PhoenixStatement.java:271)
> at
> org.apache.phoenix.jdbc.PhoenixStatement$1.call(PhoenixStatement.java:266)
> at org.apache.phoenix.call.CallRunner.run(CallRunner.java:53)
> at
> org.apache.phoenix.jdbc.PhoenixStatement.executeQuery(PhoenixStatement.java:265)
> at
> org.apache.phoenix.jdbc.PhoenixStatement.execute(PhoenixStatement.java:1444)
> at sqlline.Commands.execute(Commands.java:822)
> at sqlline.Commands.sql(Commands.java:732)
> at sqlline.SqlLine.dispatch(SqlLine.java:807)
> at sqlline.SqlLine.begin(SqlLine.java:681)
> at sqlline.SqlLine.start(SqlLine.java:398)
> at sqlline.SqlLine.main(SqlLine.java:292)
> {noformat}
> Meanwhile using the same where statement without join works just fine.
> Any ideas [~jamestaylor], [[email protected]] ?
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