в 13:45, 26 мая 2010

2010-05-26T13:45:19Z

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2010-05-26T10:01:35Z

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==Combine Months_between, to_date, to_char together==



<source lang="sql">

SQL>
SQL> SELECT MONTHS_BETWEEN(TO_DATE(TO_CHAR(TO_DATE("&date1"),
2 "mmyyyy"), "mmyyyy"),
3 TO_DATE(TO_CHAR(TO_DATE("&date2"), "mmyyyy"),
4 "mmyyyy")) Diff_Date
5 FROM DUAL;
Enter value for date1:
old 1: SELECT MONTHS_BETWEEN(TO_DATE(TO_CHAR(TO_DATE("&date1"),
new 1: SELECT MONTHS_BETWEEN(TO_DATE(TO_CHAR(TO_DATE(""),
Enter value for date2:
old 3: TO_DATE(TO_CHAR(TO_DATE("&date2"), "mmyyyy"),
new 3: TO_DATE(TO_CHAR(TO_DATE(""), "mmyyyy"),
DIFF_DATE
----------

Page 1
SQL>

</source>

==Count the months between now and hired date==



<source lang="sql">

SQL> CREATE TABLE EMP(
2 EMPNO NUMBER(4) NOT NULL,
3 ENAME VARCHAR2(10),
4 JOB VARCHAR2(9),
5 MGR NUMBER(4),
6 HIREDATE DATE,
7 SAL NUMBER(7, 2),
8 COMM NUMBER(7, 2),
9 DEPTNO NUMBER(2)
10 );
Table created.
SQL>
SQL> INSERT INTO EMP VALUES(7369, "SMITH", "CLERK", 7902,TO_DATE("17-DEC-1980", "DD-MON-YYYY"), 800, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES(7499, "ALLEN", "SALESMAN", 7698,TO_DATE("20-FEB-1981", "DD-MON-YYYY"), 1600, 300, 30);
1 row created.
SQL> INSERT INTO EMP VALUES(7521, "WARD", "SALESMAN", 7698,TO_DATE("22-FEB-1981", "DD-MON-YYYY"), 1250, 500, 30);
1 row created.
SQL> INSERT INTO EMP VALUES(7566, "JONES", "MANAGER", 7839,TO_DATE("2-APR-1981", "DD-MON-YYYY"), 2975, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES(7654, "MARTIN", "SALESMAN", 7698,TO_DATE("28-SEP-1981", "DD-MON-YYYY"), 1250, 1400, 30);
1 row created.
SQL> INSERT INTO EMP VALUES(7698, "BLAKE", "MANAGER", 7839,TO_DATE("1-MAY-1981", "DD-MON-YYYY"), 2850, NULL, 30);
1 row created.
SQL> INSERT INTO EMP VALUES(7782, "CLARK", "MANAGER", 7839,TO_DATE("9-JUN-1981", "DD-MON-YYYY"), 2450, NULL, 10);
1 row created.
SQL> INSERT INTO EMP VALUES(7788, "SCOTT", "ANALYST", 7566,TO_DATE("09-DEC-1982", "DD-MON-YYYY"), 3000, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES(7839, "KING", "PRESIDENT", NULL,TO_DATE("17-NOV-1981", "DD-MON-YYYY"), 5000, NULL, 10);
1 row created.
SQL> INSERT INTO EMP VALUES(7844, "TURNER", "SALESMAN", 7698,TO_DATE("8-SEP-1981", "DD-MON-YYYY"), 1500, 0, 30);
1 row created.
SQL> INSERT INTO EMP VALUES(7876, "ADAMS", "CLERK", 7788,TO_DATE("12-JAN-1983", "DD-MON-YYYY"), 1100, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES(7900, "JAMES", "CLERK", 7698,TO_DATE("3-DEC-1981", "DD-MON-YYYY"), 950, NULL, 30);
1 row created.
SQL> INSERT INTO EMP VALUES(7902, "FORD", "ANALYST", 7566,TO_DATE("3-DEC-1981", "DD-MON-YYYY"), 3000, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES(7934, "MILLER", "CLERK", 7782,TO_DATE("23-JAN-1982", "DD-MON-YYYY"), 1300, NULL, 10);
1 row created.
SQL>
SQL>
SQL> select ename, hiredate, months_between(sysdate,hiredate)
2 "Months" from emp;
ENAME HIREDATE Months
---------- --------- ----------
SMITH 17-DEC-80 346.302488
ALLEN 20-FEB-81 344.205714
WARD 22-FEB-81 344.141198
JONES 02-APR-81 342.786359
MARTIN 28-SEP-81 336.94765
BLAKE 01-MAY-81 341.818617
CLARK 09-JUN-81 340.560553
SCOTT 09-DEC-82 322.560553
KING 17-NOV-81 335.302488
TURNER 08-SEP-81 337.592811
ADAMS 12-JAN-83 321.463779
ENAME HIREDATE Months
---------- --------- ----------
JAMES 03-DEC-81 334.754101
FORD 03-DEC-81 334.754101
MILLER 23-JAN-82 333.10894
14 rows selected.
SQL>
SQL> drop table emp;
Table dropped.

</source>

==Experimenting with MONTHS_BETWEEN==



<source lang="sql">

SQL>
SQL> -- Experimenting with MONTHS_BETWEEN.
SQL> SELECT MONTHS_BETWEEN("25-DEC-97","02-JUN-97") "Fractional", MONTHS_BETWEEN("02-FEB-97","02-JUN-97") "Integer" from DUAL;
Fractional Integer
---------- ----------
6.74193548 -4
SQL>

</source>

==MONTHS_BETWEEN: number of months between two dates==



<source lang="sql">

SQL>
SQL> --If you need the number of months, you need to use this function.
SQL>
SQL> --The syntax for the function is:
SQL>
SQL> --MONTHS_BETWEEN(date1, date2)
SQL>
SQL>
SQL> SELECT MONTHS_BETWEEN("01-JAN-01","01-AUG-01") AS MONTHS_BETWEEN FROM Dual;
MONTHS_BETWEEN
--------------
-7

</source>

==MONTHS_BETWEEN: Returned result is a negative number of months==



<source lang="sql">

SQL>
SQL> SELECT MONTHS_BETWEEN("15-JAN-2005", "25-MAY-2005") FROM dual;
MONTHS_BETWEEN("15-JAN-2005","25-MAY-2005")
-------------------------------------------
-4.3225806
SQL>
SQL>
SQL>

</source>

==MONTHS_BETWEEN(SYSDATE, last_stock_date)==



<source lang="sql">

SQL>
SQL> CREATE TABLE product (
2 product_name VARCHAR2(25),
3 product_price NUMBER(4,2),
4 quantity_on_hand NUMBER(5,0),
5 last_stock_date DATE);
Table created.
SQL>
SQL> INSERT INTO product VALUES ("Small Widget", 99, 1, "15-JAN-03");
1 row created.
SQL> INSERT INTO product VALUES ("Medium Widget", 75, 1000, "15-JAN-02");
1 row created.
SQL> INSERT INTO product VALUES ("Product Number", 50, 100, "15-JAN-03");
1 row created.
SQL> INSERT INTO product VALUES ("Round Church Station", 25, 10000, null);
1 row created.
SQL>
SQL>
SQL>
SQL> SELECT product_name,
2 last_stock_date,
3 MONTHS_BETWEEN(SYSDATE, last_stock_date) STOCK_MONTHS
4 FROM product;
PRODUCT_NAME LAST_STOC STOCK_MONTHS
------------------------- --------- ------------
Small Widget 15-JAN-03 65.1540293
Medium Widget 15-JAN-02 77.1540293
Product Number 15-JAN-03 65.1540293
Round Church Station
SQL>
SQL> DROP TABLE product;
Table dropped.
SQL>

</source>

==MONTHS_BETWEEN with to_date function==



<source lang="sql">

SQL>
SQL> SELECT MONTHS_BETWEEN(TO_DATE("22SEP2006","ddMONyyyy"),
2 TO_DATE("13OCT2001","ddMONyyyy")) "Months difference"
3 FROM dual;
Months difference
-----------------
59.2903226
SQL>
SQL>
SQL>

</source>

==MONTHS_BETWEEN(x, y): get the number of months between x and y.==



<source lang="sql">

SQL>
SQL> SELECT MONTHS_BETWEEN("25-MAY-2005", "15-JAN-2005") FROM dual;
MONTHS_BETWEEN("25-MAY-2005","15-JAN-2005")
-------------------------------------------
4.32258065
SQL>
SQL>
SQL>

</source>

==ROUND(MONTHS_BETWEEN(SYSDATE, last_stock_date),0)==



<source lang="sql">

SQL>
SQL> CREATE TABLE product (
2 product_name VARCHAR2(25),
3 product_price NUMBER(4,2),
4 quantity_on_hand NUMBER(5,0),
5 last_stock_date DATE);
Table created.
SQL>
SQL> INSERT INTO product VALUES ("Small Widget", 99, 1, "15-JAN-03");
1 row created.
SQL> INSERT INTO product VALUES ("Medium Widget", 75, 1000, "15-JAN-02");
1 row created.
SQL> INSERT INTO product VALUES ("Product Number", 50, 100, "15-JAN-03");
1 row created.
SQL> INSERT INTO product VALUES ("Round Church Station", 25, 10000, null);
1 row created.
SQL>
SQL>
SQL> SELECT product_name,
2 last_stock_date,
3 ROUND(MONTHS_BETWEEN(SYSDATE, last_stock_date),0) STOCK_MONTHS
4 FROM product;
PRODUCT_NAME LAST_STOC STOCK_MONTHS
------------------------- --------- ------------
Small Widget 15-JAN-03 65
Medium Widget 15-JAN-02 77
Product Number 15-JAN-03 65
Round Church Station
SQL>
SQL> DROP TABLE product;
Table dropped.
SQL>
SQL>

</source>

==select months_between( sysdate, date"1971-05-18" )==



<source lang="sql">

SQL>
SQL> select months_between( sysdate, date"1971-05-18" )
2 from dual;
MONTHS_BETWEEN(SYSDATE,DATE"1971-05-18")
----------------------------------------
444.958945
1 row selected.
SQL> --

</source>

==select months_between( sysdate, date"2001-01-01" )==



<source lang="sql">

SQL>
SQL> select months_between( sysdate, date"2001-01-01" )
2 from dual;
MONTHS_BETWEEN(SYSDATE,DATE"2001-01-01")
----------------------------------------
89.5073324
1 row selected.
SQL>
SQL> --

</source>

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в 13:45, 26 мая 2010

Admin: 1 версия