資料庫設計中SQL保留字（Reserved words）的問題
最近在做MP專案的時候涉及到Oracle10gR2資料庫相關的程式設計，需要一些測試資料，我就在SQL Developer中用SQL語句向表中新增記錄：
INSERT INTO UserActionLog (log_source,user,action,terminal,time) VALUES (...);
執行該指令碼顯示出錯：ORA-01747：user.table.column,table column或列說明無效。
但我在圖形介面下手動向表格中新增內容就可以提交成功，控制檯顯示生成的SQL語句是：
INSERT INTO "SYSTEM"."UserActionLog" ("log_source","user","action","terminal","time") VALUES (...,TO_DATE('28-4月-11‘,'DD-MON-RR'));
對比SQL語句可以發現有兩點不同：
1.所有的表名、列名都包含在雙引號中
2.添加了SYSTEM表空間
於是我嘗試只新增表空間SYSTEM，發現依然報錯；只新增雙引號，也是報錯。看來只有同時應用才可以。
這讓我想到了《Oracle Database 10g 完全參考手冊》中建立資料表的一些建議（P280）：
-“各列定義由逗號分隔，...表名和列名必須以字母表中的字母開始，可以包括字母，數字和下劃線，長度為1~30個字元，...，不能用Oracle保留字”
-“如果名稱沒有用雙引號括起來，則在建立表時不用考慮字母的大小寫”
-“注意：不要用雙引號把表名和列名括起來，否則將出問題，這會給使用者和開發者造成災難”
我百度了一下ORA-01747，發現普遍是由於保留字引起的，在SQL語句輸入介面，user和time確實被高亮了，就像INSER INTO一樣。
檢視Oracle保留字的SQL語句：
SELECT * FROM v$reserved_words;
Oracle保留字有：
選定了 1,142 行
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A
ABORT
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T
TABLE
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TABNO
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THE
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TO
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TRACE
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UID
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VALIDATION
VALUE
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VARCHAR2
VARRAY
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VECTOR_READ
VECTOR_READ_TRACE
VERSION
VERSIONS
VIEW
WAIT
WALLET
WELLFORMED
WHEN
WHENEVER
WHERE
WHITESPACE
WITH
WITHIN
WITHOUT
WORK
WRAPPED
WRITE
XID
XMLATTRIBUTES
XMLCOLATTVAL
XMLELEMENT
XMLFOREST
XMLNAMESPACES
XMLPARSE
XMLPI
XMLQUERY
XMLROOT
XMLSCHEMA
XMLSERIALIZE
XMLTABLE
XMLTYPE
XML_DML_RWT_STMT
X_DYN_PRUNE
YEAR
YES
ZONE
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