zhangstar333 commented on code in PR #18388:
URL: https://github.com/apache/doris/pull/18388#discussion_r1161724992
##########
fe/fe-core/src/main/java/org/apache/doris/analysis/LambdaFunctionCallExpr.java:
##########
@@ -198,12 +202,50 @@ public void analyzeImpl(Analyzer analyzer) throws
AnalysisException {
argTypes[1] = getChild(1).getType();
}
fn = getBuiltinFunction(fnName.getFunction(), argTypes,
- Function.CompareMode.IS_NONSTRICT_SUPERTYPE_OF);
+ Function.CompareMode.IS_NONSTRICT_SUPERTYPE_OF);
if (fn == null) {
LOG.warn("fn {} not exists", this.toSqlImpl());
throw new
AnalysisException(getFunctionNotFoundError(collectChildReturnTypes()));
}
fn.setReturnType(getChild(0).getType());
+ } else if ( fnName.getFunction().equalsIgnoreCase("array_last") ) {
+
+ List<Expr> params = new ArrayList<>();
+ for (int i = 0; i <= childSize - 1; ++i) {
+ params.add(getChild(i));
+ }
+ LambdaFunctionCallExpr filterFunc = new
LambdaFunctionCallExpr("array_filter", params);
+ //filterFunc.analyzeImpl(analyzer);
+ IntLiteral indexParam = new IntLiteral(-1, Type.INT);
+ params = Lists.newArrayList(filterFunc, indexParam) ;
+
+ Type[] argTypesForCallExpr = new Type[2];
+ argTypesForCallExpr[0] = getChild(0).getType();
+ argTypesForCallExpr[1] = getChild(1).getType();
+ FunctionCallExpr callExpr = new FunctionCallExpr("element_at",
params) ;
+ callExpr.analyzeImpl(analyzer);
+
+ this.setFnName(arrayCloneExpr) ;
+
+ this.children.clear() ;
+ this.children.add(callExpr);
+
+ argTypes = new Type[1] ;
+ argTypes[0] = getChild(0).getType();
+
+ fn = getBuiltinFunction(arrayCloneExpr.getFunction(), argTypes,
Function.CompareMode.IS_NONSTRICT_SUPERTYPE_OF);
+ if (fn == null) {
+ LOG.warn("fn element_at not exists");
+ throw new
AnalysisException(getFunctionNotFoundError(collectChildReturnTypes()));
+ }
+ fn.setReturnType(getChild(0).getType());
+ } else if ( fnName.getFunction().equalsIgnoreCase("array_clone_expr")
) {
Review Comment:
I think is better to rewrite
array_last(lambda,array)--->element_at(array_filter,-1)
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