Oracle：大数字在连接时获得转换的科学记数法（40位数）

Question

Oracle在串联时将Number转换为字符串或将其移至to_char。

例：

select value from tab;
value
9076725748515642018090620180906173606980000000000000000000000000000000000000000

select RPAD(value,LENGTH(value)+1,chr(135)) from tab;

RPAD(value,LENGTH(value)+1,chr(135))
9.0767257485156420180906201809061736E+78‡

预期的结果

9076725748515642018090620180906173606980000000000000000000000000000000000000000‡

Answer 1

也许PL / SQL可以帮到你。你可以尝试下面的脚本。

CREATE OR REPLACE FUNCTION test123 (p_number NUMBER) return VARCHAR2
IS
    v_no VARCHAR2(100);
BEGIN
    EXECUTE IMMEDIATE 
     'select '''||p_number||'''||CHR(135) '||
      ' from dual'
      INTO v_no;
    RETURN v_no;
END;
/

SELECT TEST123(9076725748515642018090620180906173606980000000000000000000000000000000000000000) 
FROM DUAL;

OUTPUT                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
--------------------------------------------------------------------------------
9076725748515642018090620180906173606980000000000000000000000000000000000000000‡