在将一串数字插入sql查询
时出现问题 SELECT *
FROM tablename a
WHERE a.flokkurid IN (3857,3858,3863,3285)
ORDER BY sjodategund, rodun
...或：
SELECT *
FROM tablename a
WHERE a.flokkurid IN (:strManyNumbers)
ORDER BY sjodategund, rodun
...使用此代码：
using (OracleCommand sel = new OracleCommand(SQL, connectionstring)) {
sel.Parameters.Add(":strManyNumbers",
OracleDbType.Varchar2,
"Client",
ParameterDirection.Input);
}
所以，如果我运行此查询，我会得到：
ORA-01722：无效号码
但如果我只插入一个数字，即“3857”，它将返回带数据的查询确定。
答案 0 :(得分：6)
要传递一组值，您需要使用Oracle的表或数组类型。
首先，您创建一个表格类型（例如，对于NUMBER）：
CREATE TYPE number_table AS TABLE OF NUMBER;
为查询创建参数时，将其声明为关联的PL / SQL数组：
OracleParameter param1 = new OracleParameter();
param1.OracleDbType = OracleDbType.Int32;
param1.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
然后分配一些值：
param1 = new int[] { 3857, 3858, 3863, 3285 };
您的查询需要演员：
SELECT * FROM tablename a
where a.flokkurid in (TABLE(CAST(:manyNumbers AS number_table)))
order by sjodategund, rodun
答案 1 :(得分：1)
那是不参数如何工作。您不能将“set”指定为参数，您必须在字符串中组装SQL查询。请注意SQL Injection。
此外，您可能需要查看以下内容：
<强>更新
Codo的回答对Oracle来说非常有趣。我现在无法测试它，但它肯定看起来很有希望。
这里有一个非常相似的问题：OracleParameter and IN Clause，正如@DCookie指出的那样。它不是完全相同的，因为当数组中项目的类型发生变化时，SQL强制转换也会发生变化。
答案 2 :(得分：0)
CREATE OR REPLACE PACKAGE IH_FORMS_TRIAL.STRING_TO_TABLE IS
type grs_list_row is record ( varchar_list varchar2(512), int_list number, date_list date );
type grs_list_tab is table of grs_list_row;
FUNCTION ft_string_to_table(av2_list varchar2, av2_delimiter varchar2 := ',', av2_list_type varchar2 := 'V', av2_date_mask varchar2 := 'DD-MON-YY') return grs_list_tab PIPELINED;
END STRING_TO_TABLE;
/
CREATE OR REPLACE package body IH_FORMS_TRIAL.STRING_TO_TABLE IS
FUNCTION ft_string_to_table(av2_list varchar2, av2_delimiter varchar2 := ',', av2_list_type varchar2 := 'V', av2_date_mask varchar2 := 'DD-MON-YY') return grs_list_tab PIPELINED
IS
/**********************************************************************************************************
http://www.oracle.com/technology/sample_code/tech/pl_sql/htdocs/x/Table_Functions_Cursor_Expressions/Pipelined_Table_Functions.htm
http://www.akadia.com/services/ora_pipe_functions.html
PIPLELINED TABLE FUNCTION
PURPOSE -
------------------
This function takes a string as input and returns a table.
The table that is returned will normally be used in an SQL "IN" clause
=====================================================================================
ARGUMENTS
------------------
av2_list - this is a comma delimited list of values that will be converted into single rows of a table
av2_delimiter - this is a character value and should only be one character long.
It is the delimiter that is between valid values in the av2_list
The default value is a comma ','
av2_list_type - This function can return various types of lists or tables
For this parameter
A value of 'V' will return a table of varchar2
A value of 'I' will return a table of integers
A value of 'D' will return a table of dates
av2_date_mask - This is required if the value of av2_list_type is 'D' for date
The date mask will be used by the Oracle built-in TO_DATE function
A default value of 'DD-MON-YY' is used
=====================================================================================
RETURNS
Table of values for input to an IN portion of a WHERE clause
=====================================================================================
EXAMPLES
SELECT * FROM <TABLE> WHERE <VARCHAR_COLUMN> IN (select varchar_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('has986, abc454')));
SELECT * FROM <TABLE> WHERE <INTEGER_COLUMN> IN (select int_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('1,2,3,4,5,6,7,8,9', ',', 'I')));
SELECT * FROM <TABLE> WHERE <DATE_COLUMN> IN (select date_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('2010-03-04, 2010-03-05', ',', 'D', 'YYYY-MM-DD')));
=====================================================================================
TEST CASES
select varchar_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('has986, abc454', ',', 'V'));
select int_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('1,2,3,4,5,6,7,8,9', ',', 'I'));
select date_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('04-mar-10, 05-mar-10', ',', 'D'));
select date_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('2010-03-04, 2010-03-05', ',', 'D', 'YYYY-MM-DD'));
test using and invalid list type
Use Y instead of V, I or D
Should produce an error
select varchar_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('has986, abc454', ',', 'Y'));
test using a date format that does not match the date format passed
Should produce an error
select date_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('2010-03-04, 2010-03-05', ',', 'D', 'YYYY-MON-DD'));
select date_list from table (ih_core_owner.core.ft_string_to_table.ft_string_to_table('2010-MAR-04, 2010-MAR-05', ',', 'D', 'YYYY-MM-DD'));
----------
=====================================================================================
REVISION HISTORY
Called by misc systems
----------------------------------------------------------------
Modification History
Date User Description
------------ -------------- ----------------------------------
2006-03-03 HarvS Initial Release
2010-04-09 HarvS Translated from SQL Server to ORACLE
Combined functions that returned lists of varchar, integer, and date into one function with optional parameters
REVISION HISTORY
----------------
Build Version - 11.02.01.001
Build Date - 08-June-2010
Modified By - has986
Description - Created
******************************************************************************/
--local variable of type grs_list_row
lrs_row grs_list_row;
E_INVALID_LIST_TYPE EXCEPTION;
li_delimiter_position int;
li_previous_delimiter_position int;
lv2_value varchar2(512);
BEGIN
if av2_list_type not in ('V', 'I', 'D') THEN
raise E_INVALID_LIST_TYPE;
end if;
li_delimiter_position := 1;
li_previous_delimiter_position := 1;
li_delimiter_position := INSTR(av2_list, av2_delimiter, li_delimiter_position);
while li_delimiter_position > 0 loop
lv2_value := substr(av2_list, li_previous_delimiter_position, (li_delimiter_position - li_previous_delimiter_position));
--Trim the value
lv2_value := RTRIM(LTRIM(lv2_value));
if length(lv2_value) > 0 THEN
if av2_list_type = 'V' then --varchar
lrs_row.varchar_list := lv2_value;
elsif av2_list_type = 'I' then --integer
lrs_row.int_list := to_number(lv2_value);
elsif av2_list_type = 'D' then --date
lrs_row.date_list := to_date(lv2_value, av2_date_mask);
end if;
pipe row ( lrs_row );
END IF;
--set the new delimiter positions
li_previous_delimiter_position := li_delimiter_position + 1;
li_delimiter_position := INSTR(av2_list, av2_delimiter, li_delimiter_position + 1);
END loop;
--Get the last value
lv2_value := SUBSTR(av2_list, li_previous_delimiter_position, length(av2_list));
--Trim the value
lv2_value := RTRIM(LTRIM(lv2_value));
if length(lv2_value) > 0 THEN
--Insert the value into the in memory table
if av2_list_type = 'V' then --varchar
lrs_row.varchar_list := lv2_value;
elsif av2_list_type = 'I' then --integer
lrs_row.int_list := to_number(lv2_value);
elsif av2_list_type = 'D' then --date
lrs_row.date_list := to_date(lv2_value, av2_date_mask);
end if;
pipe row ( lrs_row );
END IF;
return;
EXCEPTION
WHEN E_INVALID_LIST_TYPE then
/*
The developer should be notified of this error during the development phase.
*/
raise_application_error (-20001, av2_list_type || ' is not a valid type. Valid types are (V, I, or D)' );
WHEN OTHERS THEN
RAISE;
END ft_string_to_table;
end string_to_table;
/
select * FROM table( string_to_table.ft_string_to_table('1, 2, 3', ',', 'I'));
select * FROM table( string_to_table.ft_string_to_table('fred, wilma, betty, barney', ',', 'V'));
select * FROM table( string_to_table.ft_string_to_table('2011-5-1, 1950-1-1, 1960-1-2, 2023-12-1', ',', 'D', 'yyyy-mm-dd'));
希望这适合你。 我已经看到了其他一些代码也可以做到这一点。 值得一提的是，这在Microsoft SQL Server中更容易实现
Harv Sather