Question

有一个名为PROFIT的表，其中包含公司的所有利润数据。该表包含500多万个数据。表结构如下所示

COMPANYID   YEAR    PROFIT
   100001   2017     50000
   100001   2016     30000
   100001   2015     20000
   100002   2017     80000
   100002   2016     70000
   100002   2015     40000
   100003   2016    100000
   100003   2015     75000
   100004   2017     50000
   100004   2016     40000
   100004   2015     30000
   100004   2014     10000
   100004   2013      5000

我有一个75000 companyid的Excel列表，我需要为所有这些公司提取数据。我无法使用IN，因为它一次只允许列表中的999个值。

请帮帮我。如何使用单个查询获取所有这些记录？目前我正在使用Oracle 11g。

Answer 1

假设......

您只想运行SQL语句
电子表格只是ID列表

...你可以准备这样的剧本。

将Excel电子表格另存为.csv
在支持正则表达式的文本编辑器中打开.csv文件
使用正则表达式将每个数字转换为选择语句：select \1 as co_id from dual union all
在输出的顶部和尾部创建一个with子句子查询
将其加入您的PROFIT表

所以现在你有这样的事情：

with cte as (
    select 1 as co_id from dual union all
    select 2 as co_id from dual union all
    ....
    select 75000 as co_id from dual 
) 
select p.companyid
       , p.year
       , sum(p.profit) as annual_profit -- or whatever
from cte
     join profit p
       on cte.co_id = p.companyid
group by p.companyid
         , p.year

这不是动态解决方案，但静态脚本应该可以进行一次性练习。如果这是一份定期报告，您应该协商在生产中进行更改的权利，以便您可以支持更好的方法。

Answer 2

我希望您可以在生产环境中运行PL / SQL代码。然后你可以尝试下面的代码，它接受最多4GB的字符串，并在应用拆分器后以行的形式返回。

由于你有excel中的行，所以你可以复制所有带有后缀a“，”的行，然后删除新行，使它成为你的输入参数。并在下面的示例代码中传递所有这些值在单个配额或字符串分隔符中。

然后，当我在“test_2”（一个虚拟表）中传递时，你可以传递你的IN子句表。

declare
v_input_str clob := '100002,100003,100004,100005,100006,100007,100008,100009,100010,100011,100012,100013,100014,100015,100016,100017,100018,100019,100020,100021,100022,100023,100024,100025,100026,100027,100028,100029,100030,100031,100032,100033,100034,100035,100036,100037,100038,100039,100040,100041,100042,100043,100044,100045,100046,100047,100048,100049,100050,100051,100052,100053,100054,100055,100056,100057,100058,100059,100060,100061,100062,100063,100064,100065,100066,100067,100068,100069,100070,100071,100072,100073,100074,100075,100076,100077,100078,100079,100080,100081,100082,100083,100084,100085,100086,100087,100088,100089,100090,100091,100092,100093,100094,100095,100096,100097,100098,100099,100100,100101,100102,100103,100104,100105,100106,100107,100108,100109,100110,100111,100112,100113,100114,100115,100116,100117,100118,100119,100120,100121,100122,100123,100124,100125,100126,100127,100128,100129,100130,100131,100132,100133,100134,100135,100136,100137,100138,100139,100140,100141,100142,100143,100144,100145,100146,100147,100148,100149,100150,100151,100152,100153,100154,100155,100156,100157,100158,100159,100160,100161,100162,100163,100164,100165,100166,100167,100168,100169,100170,100171,100172,100173,100174,100175,100176,100177,100178,100179,100180,100181,100182,100183,100184,100185,100186,100187,100188,100189,100190,100191,100192,100193,100194,100195,100196,100197,100198,100199,100200,100201,100202,100203,100204,100205,100206,100207,100208,100209,100210,100211,100212,100213,100214,100215,100216,100217,100218,100219,100220,100221,100222,100223,100224,100225,100226,100227,100228,100229,100230,100231,100232,100233,100234,100235,100236,100237,100238,100239,100240,100241,100242,100243,100244,100245,100246,100247,100248,100249,100250,100251,100252,100253,100254,100255,100256,100257,100258,100259,100260,100261,100262,100263,100264,100265,100266,100267,100268,100269,100270,100271,100272,100273,100274,100275,100276,100277,100278,100279,100280,100281,100282,100283,100284,100285,100286,100287,100288,100289,100290,100291,100292,100293,100294,100295,100296,100297,100298,100299,100300,100301,100302,100303,100304,100305,100306,100307,100308,100309,100310,100311,100312,100313,100314,100315,100316,100317,100318,100319,100320,100321,100322,100323,100324,100325,100326,100327,100328,100329,100330,100331,100332,100333,100334,100335,100336,100337,100338,100339,100340,100341,100342,100343,100344,100345,100346,100347,100348,100349,100350,100351,100352,100353,100354,100355,100356,100357,100358,100359,100360,100361,100362,100363,100364,100365,100366,100367,100368,100369,100370,100371,100372,100373,100374,100375,100376,100377,100378,100379,100380,100381,100382,100383,100384,100385,100386,100387,100388,100389,100390,100391,100392,100393,100394,100395,100396,100397,100398,100399,100400,100401,100402,100403,100404,100405,100406,100407,100408,100409,100410,100411,100412,100413,100414,100415,100416,100417,100418,100419,100420,100421,100422,100423,100424,100425,100426,100427,100428,100429,100430,100431,100432,100433,100434,100435,100436,100437,100438,100439,100440,100441,100442,100443,100444,100445,100446,100447,100448,100449,100450,100451,100452,100453,100454,100455,100456,100457,100458,100459,100460,100461,100462,100463,100464,100465,100466,100467,100468,100469,100470,100471,100472,100473,100474,100475,100476,100477,100478,100479,100480,100481,100482,100483,100484,100485,100486,100487,100488,100489,100490,100491,100492,100493,100494,100495,100496,100497,100498,100499,100500,100501,100502,100503,100504,100505,100506,100507,100508,100509,100510,100511,100512,100513,100514,100515,100516,100517,100518,100519,100520,100521,100522,100523,100524,100525,100526,100527,100528,100529,100530,100531,100532,100533,100534,100535,100536,100537,100538,100539,100540,100541,100542,100543,100544,100545,100546,100547,100548,100549,100550,100551,100552,100553,100554,100555,100556,100557,100558,100559,100560,100561,100562,100563,100564,100565,100566,100567,100568,100569,100570,100571,100572,100573';
v_count number;
begin

select count(1) into v_count
from test_2 
where id in (with i as (select v_input_str as str from dual)
                select to_number(regexp_substr(str, '[^,]+', 1, level)) in_clause_values
                from i connect by level <= length(regexp_replace(str, '[^,]+')) + 1
            );

dbms_output.put_line('No of elements : '||v_count);

end;

如何在oracle中获取批量数据？

2 个答案: