I am looking for support on the following topics:i)Splunk commands to join different sets of rows - append, appendcols, appendpipe, join and the differences between themii)IF..then.. ELSE(IF) in Splunk query. For example, using date as a condition to decide which branch of IF to executeiii)Meaning of certain Splunk error messages and how to avoid them:Streamed search execute failed because: Error in 'rex' command: regex="(?com\.succ\.\S+)\.[A-Z]\S+\((?\w+)\.java:(?\d+)\)" has exceeded configured match_limit, consider raising the value in limits.conf iv)How to combine 2 Splunk dashboards as follows: a)First dashboard has input parameters ofEnvironment(Preview/ Production),Time Range(Date Range/Time Picker),Product Area(Multi-select dropdown) andException_Type(single select dropdown) All the exceptions of dashboard one are, say, of Type A b)Second dashboard has input parameters ofEnvironment(Preview/ Production),Time Range,Product AreaandException_Type All the exceptions of dashboard one are, say, of Type BNow, the query that both a) and b) run calls a summary index each. For all 'Product Area' values except one, summary index X needs to be executed. But for one Product Area, summary both indexes X and Y need to be executed. Now, since the 'Product Area' dropdown is multi-select, it could happen that the user selects multiple product areas such that product areas with both summary indexes X and Y need to be executed. So, the query needs to accommodate or consider this use case as well. So, in short, the 'Product Area' drop-down selection can produce 3 possible use-cases: - Product Area(s) which needs execution of summary index X - Product Area which needs execution of summary index X and Y - A combination of Product Areas, some of whom need execution of summary index X, and one which needs execution of both summary indexes X and YFor easier maintenance (creating 1 dashboard instead of two), I would like to achieve the whole ofiv)in a single dashboard query, not as multiple panels (and queries) in the same dashboard. Would this be possible?