Oracle 11g的常用语法

--建表

CREATE TABLE TABLE_NAME1(

DATA_DT VARCHAR(10) NOT NULL,

)IN ODSFTB

  INDEX IN ODSFIDX

  COMPRESS YES ADAPTIVE;

--更改表格

--表加字段

ALTER TABLE TABLE_NAME1 ADD COLUMN  ID VARCHAR(100);

REORG TABLE ODSF.O_BMS_BILL_INFO ;

ALTER TABLE ODSF.O_BMS_BILL_INFO  ADD COLUMN SENDDNSIND VARCHAR(1) ;   

REORG TABLE ODSF.O_BMS_BILL_INFO ;

COMMIT;

--添加主键

ALTER TABLE TABLE_NAME1

ADD PRIMARY KEY (ID);

ALTER TABLE "ODS"."F_CBS_GLSDAYTOTALW"

  ADD PRIMARY KEY

    ( "BRCCODE", "ACCTYPE", "CCY", "SUBCTRLCODE", "TRANDATE");

COMMIT;

--添加索引

CREATE INDEX INDEX_NAME ON TABLENAME(COLUMN_NAME);

CREATE INDEX  ODSF.IND_F_L_PMIS_BUSINESS_HOUSEAPPLY

    ON ODSF.F_L_PMIS_BUSINESS_HOUSEAPPLY

    (START_DT ASC,END_DT ASC ,APPLYSERIALNO ASC);

--表加字段

ALTER TABLE ODSF.O_BMS_BILL_INFO ADD COLUMN SENDDNSIND VARCHAR(1) ;   

REORG TABLE ODSF.O_BMS_BILL_INFO ;

COMMIT;

--变更字段长度

ALTER TABLE ODSF.O_BMS_BILL_INFO ALTER COLUMN AGRMTNB SET DATA TYPE VARCHAR(30);

REORG TABLE ODSF.O_BMS_BILL_INFO ;

COMMIT;

--删除字段

ALTER TABLE ODSF.f_BMS_BILL_INFO drop COLUMN SENDDNSIND CASCADE;COMMIT;

REORG TABLE ODSF.f_BMS_BILL_INFO ;

COMMIT;

--删除表主键

ALTER TABLE ODS.F_CBS_GLSDAYTOTALW DROP PRIMARY KEY ; 

REORG TABLE ODSF.f_BMS_BILL_INFO ;

COMMIT;

--新增主键

ALTER TABLE "ODS"."F_CBS_GLSDAYTOTALW"

  ADD PRIMARY KEY

    ( "BRCCODE", "ACCTYPE", "CCY", "SUBCTRLCODE", "TRANDATE");

--新增索引

CREATE INDEX  ODSF.IND_F_L_PMIS_BUSINESS_HOUSEAPPLY

    ON ODSF.F_L_PMIS_BUSINESS_HOUSEAPPLY

    (START_DT ASC,END_DT ASC ,APPLYSERIALNO ASC);

--新增外键

ALTER TABLE tablename ADD CONSTRAINT distfk FOREIGN KEY (address) REFERENCES addresser(address) MATCH FULL

--比如，要想查询book_title中包含字符串'99%'的纪录：

SELECT * FROM BOOKS　WHERE BOOK_TITLE LIKE '%99!%%' ESCAPE '!';

--后面的escape '!'是定一个转义字符'!', 指明紧跟着转义字符'!'后的%不再是统配符

--如何获取结果集的前N行数据

SELECT * FROM TABLENAME FETCH FIRST N ROWS ONLY;