将多列合并成一列
ARRAY_TO_STRING(ARRAY[column1, column2, column3], ' ')" as new_column
将column1, column2, column3合并,通过空格相连,取别名new_column
将多列合并成一列
ARRAY_TO_STRING(ARRAY[column1, column2, column3], ' ')" as new_column
将column1, column2, column3合并,通过空格相连,取别名new_column