Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/6843#discussion_r32804551
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -1347,11 +1348,103 @@ object functions {
/**
* Computes the length of a given string column
+ *
* @group string_funcs
* @since 1.5.0
*/
def strlen(columnName: String): Column = strlen(Column(columnName))
+ /**
+ * Computes the numeric value of the first character of the specified
string value.
+ *
+ * @group string_funcs
+ * @since 1.5.0
+ */
+ def ascii(e: Column): Column = Ascii(e.expr)
+
+ /**
+ * Computes the numeric value of the first character of the specified
string column.
+ *
+ * @group string_funcs
+ * @since 1.5.0
+ */
+ def ascii(columnName: String): Column = ascii(Column(columnName))
+
+ /**
+ * Computes the specified value from binary to a base 64 string.
+ *
+ * @group string_funcs
+ * @since 1.5.0
+ */
+ def base64(e: Column): Column = Base64(e.expr)
+
+ /**
+ * Computes the specified column from binary to a base 64 string.
+ *
+ * @group string_funcs
+ * @since 1.5.0
+ */
+ def base64(columnName: String): Column = base64(Column(columnName))
+
+ /**
+ * Computes the specified value from a base 64 string to binary.
--- End diff --
Base64 is a single word
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