## sumAggregateFunction
```mermaid
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'themeVariables': {
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}}%%
flowchart LR
sumAggregateFunction_start([sumAggregateFunction])
sumAggregateFunction_start --> sumAggregateFunction_0_0[SUM]
sumAggregateFunction_0_0 --> sumAggregateFunction_0_1["("]
sumAggregateFunction_0_1 --> sumAggregateFunction_0_2[distinct]
sumAggregateFunction_0_2 --> sumAggregateFunction_0_3[expression]
sumAggregateFunction_0_3 --> sumAggregateFunction_0_4[")"]
sumAggregateFunction_0_4 --> sumAggregateFunction_end(( ))
```