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Snippet Name: Date Functions: WHERE Clause Joins

Description: Examples of using dates in WHERE Clause Joins.

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» INDEXES: ENABLE (function-based index)
» INDEXES: DISABLE (function-based index)
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» Alternate Title Case function
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Comment: (none)

Language: PL/SQL
Highlight Mode: PLSQL
Last Modified: March 03rd, 2009

SELECT SYSDATE FROM dual;
 
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY HH24:MI:SS';
 
SELECT SYSDATE FROM dual;
 
/
 
/
 
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY';
 
CREATE TABLE t (
datecol DATE);
 
INSERT INTO t
(datecol)
VALUES
(SYSDATE);
 
SELECT * FROM t;
 
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY HH24:MI:SS';
 
SELECT * FROM t;
 
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY';
 
SELECT * FROM t;
 
SELECT SYSDATE FROM dual;
 
SELECT * FROM t
WHERE datecol = SYSDATE;
 
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY HH24:MI:SS';
 
SELECT * FROM t;
 
SELECT SYSDATE FROM dual;
 
SELECT TRUNC(SYSDATE) FROM dual;
 
SELECT * FROM t
WHERE TRUNC(datecol) = TRUNC(SYSDATE);
 
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY';


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