List < Column > function ( ) { return usingColumns ; }
returns the `` using '' list of net.sf.jsqlparser.schema.column s if any concode_field_sep boolean natural concode_elem_sep boolean left concode_elem_sep List<Column> usingColumns concode_elem_sep boolean full concode_elem_sep FromItem rightItem concode_elem_sep boolean outer concode_elem_sep boolean right concode_elem_sep boolean cross concode_elem_sep boolean inner concode_elem_sep boolean simple concode_elem_sep Expression onExpression concode_field_sep boolean isNatural concode_elem_sep void setLeft concode_elem_sep Expression getOnExpression concode_elem_sep void setOuter concode_elem_sep boolean isCross concode_elem_sep void setUsingColumns concode_elem_sep boolean isOuter concode_elem_sep void setCross concode_elem_sep void setNatural concode_elem_sep void setOnExpression concode_elem_sep boolean isInner concode_elem_sep void setSimple concode_elem_sep boolean isRight concode_elem_sep void setInner concode_elem_sep boolean isLeft concode_elem_sep FromItem getRightItem concode_elem_sep void setRightItem concode_elem_sep boolean isSimple concode_elem_sep void setRight concode_elem_sep String toString concode_elem_sep boolean isFull concode_elem_sep void setFull