開發項目時,遇到一個錯誤:"[Oracle][ODBC]Numeric value out of range."經查,應該是資料值超過欄位的定義長,但是檢查了良久,仍然沒有發現超長的資料. 最後,終於發現有個這樣的問題,不知是否為Oracle適配器的一個BUG.目標為Oracle資料庫,採用Oracle適配器進行資料交換,如果目標表中有date類型的欄位,而對該欄位未賦值,則會出現問題.報錯:"[Oracle][ODBC]Numeric value out of
1.invalid number:本身是字串格式還要轉換成字串格式 2.a non-numeric charactor was found where a numeric was expected :本身是日期格式還轉成日期格式 3.column ambiguously defind:欄位含糊不清,幾個表中都有,得指定是哪個表的欄位 4.Character to numeric conversion error本來是三位元,要轉換成兩位元,比如273.4轉換to_char(273.4,'99.9
What is the Oracle Diagnostic Methodology (ODM)? [ID 312789.1]ODM TEST:查詢語句:select to_number(addr,'xxxxxxxxxxxxxxxx') from v$latch_parent where name='process allocation'; select name from v$latch_parent where name like '%library%'; select
When I tried to install Oracle 8i on Win2K with SP4, the setup program just did not startup.There seems to be a known issue:CPUID detection for Intel. Pentium. 4 processor system:Intel has identified that applications which use the Symantec Just in
Oracle方面 1.建立Oracle過程儲存 create or replace procedure proce_test(paramin in varchar2,paramout out varchar2,paraminout in out varchar2) as varparam varchar2(28); begin varparam:=paramin; paramout:=varparam|| paraminout;
一、在PLSQL中建立表:Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->create table HWQY.TEST(CARNO VARCHAR2(30),CARINFOID NUMBER) 二、在PLSQL中建立預存程序:Code highlighting produced by Actipro CodeHighlighter
格式:(非package裡)create or replace function function_name ( argu1 [mode1] datatype1, argu2 [mode2] datatype2, ........ ) return datatype is Result varchar2(50); begin return Result ; end; 調用: var v1 varchar2(100) exec
在資料庫查詢中常常會碰到要查詢樹形結構的資料,需要用一個欄位的資料當做下一條記錄的父節點繼續查詢,如果在不知道有多少級節點的情況下一次次手寫SQL查詢會很繁瑣而沒有效率,這時可以使用oracle中的connect with prior遞迴演算法:Oracle中start with...connect by prior子句用法 connect by 是結構化查詢中用到的,其基本文法是: select... from tablename start with 條件1
左:SELECT e.last_name, e.department_id, d.department_name FROM employees e LEFT JOIN departments d ON (e.department_id = d.department_id); 等價於SELECT e.last_name, e.department_id, d.department_name FROM employees e, departments d