## productAggregateFunction
```mermaid
%%{init: {
'theme': 'base',
'themeVariables': {
'fontSize': '11px',
'nodePadding': '1',
'nodeBorder': '1',
'lineWidth': '0.8',
'fontFamily': 'Arial'
}
}}%%
flowchart LR
productAggregateFunction_start([productAggregateFunction])
productAggregateFunction_start --> productAggregateFunction_0_0[PRODUCT]
productAggregateFunction_0_0 --> productAggregateFunction_0_1["("]
productAggregateFunction_0_1 --> productAggregateFunction_0_2[distinct]
productAggregateFunction_0_2 --> productAggregateFunction_0_3[expression]
productAggregateFunction_0_3 --> productAggregateFunction_0_4[")"]
productAggregateFunction_0_4 --> productAggregateFunction_end(( ))
```