morrySnow commented on code in PR #12444:
URL: https://github.com/apache/doris/pull/12444#discussion_r965439581


##########
fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisLexer.g4:
##########
@@ -433,13 +433,13 @@ DECIMAL_VALUE
     ;
 
 FLOAT_LITERAL
-    : DIGIT+ EXPONENT? 'F'
-    | DECIMAL_DIGITS EXPONENT? 'F' {isValidDecimal()}?
+    : DIGIT+ EXPONENT? 'F'?

Review Comment:
   we should not change this, but to add another `DECIMAL_VALUE` with no 
suffix. And like Integral type, decide what real type to use in 
LogicalPlanBuilder



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