## avgAggregateFunction
```mermaid
%%{init: {
'theme': 'base',
'themeVariables': {
'fontSize': '11px',
'nodePadding': '1',
'nodeBorder': '1',
'lineWidth': '0.8',
'fontFamily': 'Arial'
}
}}%%
flowchart LR
avgAggregateFunction_start([avgAggregateFunction])
avgAggregateFunction_start --> avgAggregateFunction_0_0[AVG]
avgAggregateFunction_0_0 --> avgAggregateFunction_0_1["("]
avgAggregateFunction_0_1 --> avgAggregateFunction_0_2[distinct]
avgAggregateFunction_0_2 --> avgAggregateFunction_0_3[expression]
avgAggregateFunction_0_3 --> avgAggregateFunction_0_4[")"]
avgAggregateFunction_0_4 --> avgAggregateFunction_end(( ))
```