===

infix fun <Error class: unknown class>.===(other: Any): <Error class: unknown class>

Equality test.

// Scala:
df.filter( df("colA") === df("colB") )

// Kotlin:
import org.jetbrains.kotlinx.spark.api.*
df.filter( df("colA") eq df("colB") )
// or
df.filter( df("colA") `===` df("colB") )

// Java
import static org.apache.spark.sql.functions.*;
df.filter( col("colA").equalTo(col("colB")) );