The IF Statement Tableau returns the result (i.e. TRUE) only if the given condition is met, but if the condition is not met (i.e. FALSE) then it returns a NULL value. This is also referred to as conditional exp
Highlights:easy-to-use, query reports, convenient data entry, rich APIs, mobile and dashboard display Price:For personal use, FineReport is free without time and features limit. For enterprises, it offersa quote-based planthat charges according to different situations. In a word, FineReport is ...
Yet another compiler removes redundant parts of the logical model and transforms it into queries that can be run against your data. Query Layer Prep leverages the Tableau Query Layer that allows Prep users to connect to files, and relational, and NoSQL databases using more than 95 Tableau nati...
2. Next, we open Tableau [3] and connect to Cassandra (Fig 2) using the ODBC connection created in the previous step. Fig 2: Connecting to Cassandra using ODBC 3. Then, we code our join query using Tableau’s Custom SQL Query[4] editor (Fig 3) to create a dashboard that displays...
To improve the performance of your SQL query, you first have to know what happens internally when you press the shortcut to run the query. First, the query is parsed into a “parse tree”; The query is analyzed to see if it satisfies the syntactical and semantical requirements. The parser...
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Attackers use the information in detailed error messages to help deconstruct a SQL query that they are trying to inject with malicious code. A detailed error message may reveal valuable information such as the connection string, SQL server name, or table and database naming conventions....
(as we did), via a variable, or from a file connection. Another way to build the SQL statement is to use the Build Query action button. This brings up a Query-By- Example (QBE) tool that helps you build a query by clicking the tables and establishing the relationships. The variable-...
In the SQL Query Text section, add the following query:SELECT * FROM contacts; Next, drag aTransformconnector into the flow. This transform message is going to take each entry from the database and convert it into a JSON format. To complete this data transformation, simply rep...
to the inner join type. The below diagram illustrates the inner join. An inner join returns data if a given value for the primary key exists in both tables. Unless you have the query pre-built, Tableau recommends that you use the canvas area on the Data Source page to create inner ...