上QQ阅读APP看书，第一时间看更新
Chapter 4. Mapping Data
This chapter contains recipes that show some of the techniques used to map input data to the desired output format.
- Simple mapping and tMap time savers
- Creating tMap expressions
- Using the ternary operator for conditional logic
- Using intermediate variables in tMap
- Filtering input rows
- Splitting an input row into multiple outputs based upon input conditions
- Joining data using tMap
- Hierarchical join using tMap
- Using reload at each row to process real-time/near real-time data