SQL查询语法分析：SELECT toStartOfDay(toDateTime(Ds)) AS datetime_day_Ds, PlatformType, GREATEST(count(DISTINCT UrlContent2) FILTER (WHERE PlatformType in (4) AND UrlContent2 != ''), max(MergedUrlCount) FILTER (WHERE PlatformType in (3,4)), max(MergedViewCount) FILTER (WHERE PlatformType not in (3,4))) AS index_mergedviewcount
是的，给定的SQL查询语法是正确的。
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