Maximum size is (4 gigabytes - 1) * (database block size). Both fixed-width and variable-width character sets are supported, both using the database national character set. Maximum size is (4 gigabytes - 1) * (database block size).Ī character large object containing Unicode characters. Both fixed-width and variable-width character sets are supported, both using the database character set. Default and minimum size is 1 character.Ī character large object containing single-byte or multibyte characters. Maximum size is determined by the national character set definition, with an upper limit of 2000 bytes. The number of bytes can be up to two times size for AL16UTF16 encoding and three times size for UTF8 encoding. Default and minimum size is 1 byte.īYTE and CHAR have the same semantics as for VARCHAR2.įixed-length character data of length size characters. Maximum size is 2000 bytes or characters. The maximum size and default is 4000 bytes.įixed-length character data of length size bytes or characters. The optional size is the size of a column of type UROWID. This data type is primarily for values returned by the ROWID pseudocolumn.īase 64 string representing the logical address of a row of an index-organized table. Raw binary data of variable length up to 2 gigabytes.īase 64 string representing the unique address of a row in its table. The default is 2.įractional_seconds_precision is the number of digits in the fractional part of the SECOND field. Stores a period of time in days, hours, minutes, and seconds, whereĭay_precision is the maximum number of digits in the DAY datetime field. Stores a period of time in years and months, where year_precision is the number of digits in the YEAR datetime field. The size is 7 or 11 bytes, depending on the precision. The default format is determined explicitly by the NLS_TIMESTAMP_FORMAT parameter or implicitly by the NLS_TERRITORY parameter. When the data is retrieved, users see the data in the session time zone. TIMESTAMP WITH LOCAL TIME ZONEĪll values of TIMESTAMP WITH TIME ZONE, with the following exceptions:ĭata is normalized to the database time zone when it is stored in the database. It has fractional seconds and an explicit time zone. This data type contains the datetime fields YEAR, MONTH, DAY, HOUR, MINUTE, SECOND, TIMEZONE_HOUR, and TIMEZONE_MINUTE. TIMESTAMP WITH TIME ZONEĪll values of TIMESTAMP as well as time zone displacement value, where fractional_seconds_precision is the number of digits in the fractional part of the SECOND datetime field. It contains fractional seconds but does not have a time zone. This data type contains the datetime fields YEAR, MONTH, DAY, HOUR, MINUTE, and SECOND. Accepted values of fractional_seconds_precision are 0 to 9. Year, month, and day values of date, as well as hour, minute, and second values of time, where fractional_seconds_precision is the number of digits in the fractional part of the SECOND datetime field. ![]() This data type requires 4 bytes.Ħ4-bit floating point number. It does not have fractional seconds or a time zone.ģ2-bit floating point number. The default format is determined explicitly by the NLS_DATE_FORMAT parameter or implicitly by the NLS_TERRITORY parameter. Valid date range from JanuBC, to DecemAD. A FLOAT value requires from 1 to 22 bytes.Ĭharacter data of variable length up to 2 gigabytes, or 2 31 -1 bytes. The precision p can range from 1 to 126 binary digits. A FLOAT value is represented internally as NUMBER. A NUMBER value requires from 1 to 22 bytes.Ī subtype of the NUMBER data type having precision p. Both precision and scale are in decimal digits. ![]() Maximum size is determined by the national character set definition, with an upper limit of:ģ2767 bytes if MAX_STRING_SIZE = EXTENDED ![]() Variable-length Unicode character string having maximum length size characters. CHAR indicates that the column will have character semantics. Refer to Oracle Database SQL Language Reference for more information on the MAX_STRING_SIZE initialization parameter.īYTE indicates that the column will have byte length semantics. Maximum size is:ģ2767 bytes or characters if MAX_STRING_SIZE = EXTENDEDĤ000 bytes or characters if MAX_STRING_SIZE = STANDARD Variable-length character string having maximum length size bytes or characters. Table 6-1 Built-in Data Type Summary Code
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