ClickHouse SQL: Fixing Syntax Errors in Your Query

This article explains how to fix common syntax errors found in ClickHouse SQL queries. The code you provided has two main issues:

1. PlatformType in 3,4 is incorrect syntax. The correct syntax is PlatformType IN (3,4). This ensures the query checks if PlatformType is either 3 or 4.

2. toDateTime(#day_wechat_views_time.start#) and toDateTime(#day_wechat_views_time.end#) are placeholder values. Replace these with actual date and time values. For example, use toDateTime('2022-01-01') and toDateTime('2022-01-31') to filter data within a specific month.

Here is the corrected code:

SELECT toStartOfDay(toDateTime(Ds)) AS datetime_day_Ds,
  PlatformType AS PlatformType,
  max(MergedUrlCount)  AS index_mergedviewcount_0,
  max(MergedViewCount)  AS index_mergedviewcount_1
FROM log_iMonkey_Wechat_overview
WHERE Debug = 0 AND PlatformType IN (3,4) AND
  Ds >= toDateTime('2022-01-01') AND Ds <= toDateTime('2022-01-31')

This corrected query will accurately retrieve data for platforms 3 and 4 within the specified date range. Remember to replace the placeholder date values with your desired date range.