Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. April 03, 2002 - 4:06 pm UTC . However, you can use PLSQL code to determine the value of a LONG field. Conversions of date/time values. If you want to insert the "long value size" - it sounds like you want a function that returns the size in bytes of a given long. ORACLE 10g TOAD 9.1 Oracle will not allow you the convert the data type LONG (2 GB or more) to CHAR (2000 bytes). The parameters of the TO_CHAR function are: input_value (mandatory): This is the value to convert into a String type. Format Models . A format model is a character literal that describes the format of datetime or numeric data stored in a character string. If a DATE is converted to a TIMESTAMP, the TIME component of the resulting TIMESTAMP is … In this example, we used the DUMP() function to return the detailed information on x and y columns:. For this reason, it is still quite common to see questions in Oracle … For this reason, it is still quite common to see questions in Oracle … Answer: In Oracle, LONG fields are a bit tricky. The syntax for the TO_CHAR function in Oracle/PLSQL is: TO_CHAR( value [, format_mask] [, nls_language] ) Parameters or Arguments value A number or date that will be converted to a string. Answer: First, the LONG and LONG RAW datatypes are superseded by the new LOB datatypes (CLOB, BLOB and BFILE), and I would consider re-defining the table to have a LOB column instead of raw.
Followup November 21, 2003 - 7:25 am UTC ORA-00932: inconsistent datatypes: expected NUMBER got LONG TO_CHAR(TBLDATE) gives me this ORA-00932: inconsistent datatypes: expected CHAR got LONG How do I get rid of the LONG format?
How can I alter a long raw datatype to a character datatype? The string Oracle takes 6 bytes. Also see Insert into long raw column Tips. The syntax of the Oracle TO_CHAR function is: TO_CHAR( input_value, [format_mask], [nls_parameter] ) Parameters. A date/time value can always be converted to and from a TIMESTAMP.
Some say that you can search in the first 2,000 characters of a LONG column by converting it to a varchar2 by using the substr function: The syntax of the Oracle TO_CHAR function is: TO_CHAR( input_value, [format_mask], [nls_parameter] ) Parameters. working with long columns. 在oracle中，当我们读取系统表user_tab_cols中的data_default字段时，发现这个是long类型的字段，也就是说不能读取了，因此我们需要进行转换，下面是这种方法的转换函数create or replace function long_to_char(utable in varchar2,uid in number)return varchar2as uval varch_oracle long类型转换成字 …