Kitchen sink sample for loader testing
Row identifier
Integer positive control
Big integer beyond int32 range
Floating point with decimals
Nullable boolean 0/1/NaN
Short string positive control
Longer free-text string
Date positive control
Datetime with missing values
Time of day with missing values
Numeric-looking strings in a char column
Date-looking strings in a char column
Heterogeneous strings: fallback to text
Constant repeated value
Entirely missing numeric column
Entirely missing character column