Method detectAllColumnTypes

buffer.go:673–690

detectAllColumnTypes automatically detects types for all columns in parallel

()

// detectAllColumnTypes automatically detects types for all columns in parallel
func (b *Buffer) detectAllColumnTypes() {
	types := make([]int, b.colLen)
	var wg sync.WaitGroup

	for i := 0; i < b.colLen; i++ {
		wg.Add(1)
		go func(col int) {
			defer wg.Done()
			types[col] = b.autoDetectColumnType(col)
		}(i)
	}

	wg.Wait()

	for i, t := range types {
		b.setColType(i, t)
	}
}

// enableStringInterning analyzes columns and enables interning for low-cardinality string columns
// This can save 30-70% memory for datasets with repeated categorical values