Tableau operation data source
1. Data Type
Common data types are as follows:
- STRING
string type, the use of single or double quotes- NUMBER
numeric types, i.e., integer and floating point- BOOLEAN
type boolean, true and false representation- DATE
date type, such as 2012-12-12- DATETIME
datetime type, such as 2012-12-12 12:12:12
2. Data Sources
Tableau supports all common data source connection.
- File system: such as Excel, CSV file
- Relational systems: Oracle, MySQL, DB2 and other relational database
- Cloud System: Windows Azure, Google BigQuery, etc.
- Other sources using ODBC or JDBC
Three features of the data source
- Real-time connections: Tableau connected to the real-time data source and continuously read data for real-time data analysis
- Data Cache: The data in the cache memory to process the data in memory, is no longer connected to the data source when the data analysis
- A combination of data sources: the combined data from different sources
3. The data source connection
Excel data connection
Displays the following information is connected to the data provided by the official instances, the connection is successful
MySQL data connection
Connect to a remote MySQL server
after a successful connection, select the database
selected student table, and update immediately
Multi-table joins
There are multi-table connection: inner join, left and right connections, is an inner join by default.
Data mixed
Data will be analyzed together different sources of data aggregation
Extract data
Extracting data filters to select the desired data. Select Add Filter pop-up dialog box below
for example, to extract information about an order in East China, follows
this time View All columns are East
