Updating date field in oracle College cams


02-Aug-2020 01:25

Server, you have to use a datetime style that defines the format for the entire datetime string.

DECLARE 2 CURSOR C1 IS SELECT EMP_CODE, EMP_SALARY FROM EMP; 3 BEGIN 4 FOR I IN C1 5 LOOP 6 UPDATE EMP_SAL 7 SET EMP_SALARY = I. EMP_CODE; 9 END LOOP; 10 END; 11 / PL/SQL procedure successfully completed.

We have the following query:select * from t_torder where to_char(order_date,'DAY')='SUNDAY'; This query does not return any data even though there are data there. It has EVERYTHING to do with how the format mask you used formated the data. if so, share that with me along with what the valid data would look like -- database version appreciated as well. Tom, The date and time format is always the same, i.e. COM create or replace function my_to_date( p_num in number, p_str in varchar2 ) return date 2 as 3 begin 4 return to_date( p_num )If you omit fmt, then char must be in the default date format."My session nls_date_format was DD-MON-YYYY and my database/instance level nls_date_format was DD-MON-RR. Begin Excerpt from Oracle Documentation: Purpose TO_DATE converts char of CHAR, VARCHAR2, NCHAR, or NVARCHAR2 datatype to a value of DATE datatype.

Also, we are using the default of AMERICA for NLS_TERRITORY at instance level. If fmt is 'J', for Julian, then char must be an integer.

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We have the following query:select * from t_torder where to_char(order_date,'DAY')='SUNDAY'; This query does not return any data even though there are data there. It has EVERYTHING to do with how the format mask you used formated the data. if so, share that with me along with what the valid data would look like -- database version appreciated as well. Tom, The date and time format is always the same, i.e. COM create or replace function my_to_date( p_num in number, p_str in varchar2 ) return date 2 as 3 begin 4 return to_date( p_num || p_str, 'yyyymmddhh24:mi:ss' ); 5 exception 6 when others then 7 return null; 8 end; 9 /Function created.there is the PLSQL way to do [email protected] Elapsed: .28That shows how we can use SQL to "edit" the data -- verify it falls within our limits. I explicitly altered the NLS_DATE_FORMAT at session level and was expecting that TO_DATE will throw an error for not supplying 4 digit year. You cannot use 2 characters to represent that which takes a MINIMUM of 4 to accurately convey. I also suggest everyone to use 4 digits for year (even if they don't ask - I suggest anyway:)After the IT industry has gone through the effort of fixing the Y2K issue in a hard way, everyone should have learned their lesson. As per Oracle Documentation URL:"Text description of to_date TO_DATE ( char [, fmt [, 'nlsparam']] )If you omit fmt, then char must be in the default date format."My session nls_date_format was DD-MON-YYYY and my database/instance level nls_date_format was DD-MON-RR. Begin Excerpt from Oracle Documentation: Purpose TO_DATE converts char of CHAR, VARCHAR2, NCHAR, or NVARCHAR2 datatype to a value of DATE datatype.Also, we are using the default of AMERICA for NLS_TERRITORY at instance level. If fmt is 'J', for Julian, then char must be an integer.

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