EmmyMiao87 commented on a change in pull request #2799: Return NullLiteral in
castTo method instead of throwing a exception
URL: https://github.com/apache/incubator-doris/pull/2799#discussion_r368516189
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File path: fe/src/test/java/org/apache/doris/analysis/SqlModeTest.java
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@@ -76,4 +80,34 @@ public void testPipesAsConcatMode() {
}
Assert.assertEquals("(('a') OR ('b')) OR ('c')", expr.toSql());
}
+
+ @Test
+ public void testPipesAsConcatModeNull() {
+ // Mode Active
+ String stmt = new String("SELECT ('10' || 'xy' > 1) + 2");
+ SqlParser parser = new SqlParser(new SqlScanner(new
StringReader(stmt), SqlModeHelper.MODE_PIPES_AS_CONCAT));
+ SelectStmt parsedStmt = null;
+ try {
+ parsedStmt = (SelectStmt) parser.parse().value;
+ } catch (Exception e) {
+ Assert.fail(e.getMessage());
+ }
+ Expr expr = parsedStmt.getSelectList().getItems().get(0).getExpr();
+ if (!(expr.contains(FunctionCallExpr.class))) {
+ Assert.fail("Mode not working");
+ }
+
+ analyzer = AccessTestUtil.fetchAdminAnalyzer(false);
+ try {
+ parsedStmt.analyze(analyzer);
+ ExprRewriter rewriter = analyzer.getExprRewriter();
+ rewriter.reset();
+ parsedStmt.rewriteExprs(rewriter);
+
+ Expr result =
parsedStmt.getSelectList().getItems().get(0).getExpr();
+ Assert.assertEquals(Expr.IS_NULL_LITERAL.apply(result), true);
Review comment:
what the different between IS_NULL_LITERAL and result instance of
NullLiteral
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