| collations() | Get all of the Spark SQL string collations | 
    
      | explode(expr) | Separates the elements of array `expr` into multiple rows, or the elements of map `expr` into multiple rows and columns. Unless specified otherwise, uses the default column name `col` for elements of the array or `key` and `value` for the elements of the map. | 
    
      | explode_outer(expr) | Separates the elements of array `expr` into multiple rows, or the elements of map `expr` into multiple rows and columns. Unless specified otherwise, uses the default column name `col` for elements of the array or `key` and `value` for the elements of the map. | 
    
      | inline(expr) | Explodes an array of structs into a table. Uses column names col1, col2, etc. by default unless specified otherwise. | 
    
      | inline_outer(expr) | Explodes an array of structs into a table. Uses column names col1, col2, etc. by default unless specified otherwise. | 
    
      | posexplode(expr) | Separates the elements of array `expr` into multiple rows with positions, or the elements of map `expr` into multiple rows and columns with positions. Unless specified otherwise, uses the column name `pos` for position, `col` for elements of the array or `key` and `value` for elements of the map. | 
    
      | posexplode_outer(expr) | Separates the elements of array `expr` into multiple rows with positions, or the elements of map `expr` into multiple rows and columns with positions. Unless specified otherwise, uses the column name `pos` for position, `col` for elements of the array or `key` and `value` for elements of the map. | 
    
      | sql_keywords() | Get Spark SQL keywords | 
    
      | stack(n, expr1, ..., exprk) | Separates `expr1`, ..., `exprk` into `n` rows. Uses column names col0, col1, etc. by default unless specified otherwise. |