Client APIs
Example
```python
from duckdb.experimental.spark.sql import SparkSession as session
from duckdb.experimental.spark.sql.functions import lit, col
import pandas as pd

spark = session.builder.getOrCreate()

pandas_df = pd.DataFrame({
'age': [34, 45, 23, 56],
'name': ['Joan', 'Peter', 'John', 'Bob']
})

df = spark.createDataFrame(pandas_df)
df = df.withColumn(
'location', lit('Seattle')
)
res = df.select(
col('age'),
col('location')
).collect()

print(res)
```  
```text
[
Row(age=34, location='Seattle'),
Row(age=45, location='Seattle'),
Row(age=23, location='Seattle'),
Row(age=56, location='Seattle')
]
```