public final boolean containsColumn(String columnName) {
        if (StringUtils.isNotBlank(columnName)) {
            return sqlTableColumns.containsKey(columnName);
        }
        return false;
    }
public final boolean containsColumn(String columnName) {
        if (StringUtils.isNotBlank(columnName)) {
            return sqlTableColumns.containsKey(columnName);
        }
        return false;
    }
public final boolean containsColumn ( String columnName ) { if ( StringUtils . isNotBlank ( columnName ) ) { return sqlTableColumns . containsKey ( columnName ) ; } return false ; }
Checks if the give column exist (by name)

@param columnName    The name of the {@link AbstractSqlColumn SqlColumn}
Checks if the give column exist ( by name )