Oracle ??? ??: ???? ???
??? ?????? ???? ?? ?? ?? ? ??? ??? ?? ??? ????? ???? ?? ??? ????. ???? ??? ????, ???? ??? ???? ?? ??? ???? ?? ?????.
Oracle? ?? ??? ????? ???? ?? ??? ?????. ?? MyTable, mytable, MYTABLE? ?? ??? ???? ????? ?????. ??? ??? ??? ????? ??? ?????.
????? ????? ?????. "MyTable"? "mytable" ?? "MYTABLE"? ????. ???? ???? ??? ?? ???? ??? ??? ???? ? ???? ????? ???.
?? ?? ?????.
SELECT * FROM mytable WHERE id = 1; -- Works (case-insensitive)
? ??? Oracle? ?? ???? ?? ??? ?? ?????. ??? ??? ?????:
SELECT * FROM "mytable" WHERE id = 1; -- Fails (case-sensitive)
? ??? "mytable"? ????? ????? ????? ??? ?????. ???? ??? ????? ???? ?????.
Oracle? ????? ???? ?? ??? ????? ???? ?? ???? ?? ???? ???? ?????. ??? ?? ?????.
???? ??? ? ???:
CREATE TABLE "my_data"(col1 NUMBER, col2 VARCHAR2(255));
??? ???:
SELECT * FROM "my_data"; SELECT * FROM "MY_DATA"; SELECT * FROM "My_Data";
??? ?? ?????.
SELECT * FROM my_data;
??? ??? ?? ???? ??? ??:
CREATE TABLE my_other_data(col1 NUMBER, col2 VARCHAR2(255));
?? ???? ?? ???? ????.
SELECT * FROM My_Other_Data; SELECT * FROM "my_other_data"; SELECT * FROM "MY_OTHER_DATA";
? ??? ?????:
SELECT * FROM my_other_data;
???? Oracle ?????? ?? ? ?? ??? ???? ???? ??(??? ??) ???? ???? ?? ? ?(??? ??) ???? ???? ????? ??? ???? ?? ??????.
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