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DBA Data [Home] [Help] [Dependency Information]

VIEW: SYS.DBA_TAB_COLS

Object Details

Object Name:	DBA_TAB_COLS
Object Type:	VIEW
Owner:	SYS
Subobject Name:
Status:	VALID

Columns of user's tables, views and clusters

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Columns

Name	Datatype	Length	Mandatory	Comments
OWNER	VARCHAR2	(128)	Yes
TABLE_NAME	VARCHAR2	(128)	Yes	Table, view or cluster name
COLUMN_NAME	VARCHAR2	(128)	Yes	Column name
DATA_TYPE	VARCHAR2	(128)		Datatype of the column
DATA_TYPE_MOD	VARCHAR2	(3)		Datatype modifier of the column
DATA_TYPE_OWNER	VARCHAR2	(128)		Owner of the datatype of the column
DATA_LENGTH	NUMBER		Yes	Length of the column in bytes
DATA_PRECISION	NUMBER			Length: decimal digits (NUMBER) or binary digits (FLOAT)
DATA_SCALE	NUMBER			Digits to right of decimal point in a number
NULLABLE	VARCHAR2	(1)		Does column allow NULL values?
COLUMN_ID	NUMBER			Sequence number of the column as created
DEFAULT_LENGTH	NUMBER			Length of default value for the column
DATA_DEFAULT	LONG	(0)		Default value for the column
NUM_DISTINCT	NUMBER			The number of distinct values in the column
LOW_VALUE	RAW	(1000)		The low value in the column
HIGH_VALUE	RAW	(1000)		The high value in the column
DENSITY	NUMBER			The density of the column
NUM_NULLS	NUMBER			The number of nulls in the column
NUM_BUCKETS	NUMBER			The number of buckets in histogram for the column
LAST_ANALYZED	DATE			The date of the most recent time this column was analyzed
SAMPLE_SIZE	NUMBER			The sample size used in analyzing this column
CHARACTER_SET_NAME	VARCHAR2	(44)		Character set name
CHAR_COL_DECL_LENGTH	NUMBER			Declaration length of character type column
GLOBAL_STATS	VARCHAR2	(3)		Are the statistics calculated without merging underlying partitions?
USER_STATS	VARCHAR2	(3)		Were the statistics entered directly by the user?
AVG_COL_LEN	NUMBER			The average length of the column in bytes
CHAR_LENGTH	NUMBER			The maximum length of the column in characters
CHAR_USED	VARCHAR2	(1)		C if the width was specified in characters, B if in bytes
V80_FMT_IMAGE	VARCHAR2	(3)		Is column data in 8.0 image format?
DATA_UPGRADED	VARCHAR2	(3)		Has column data been upgraded to the latest type version format?
HIDDEN_COLUMN	VARCHAR2	(3)		Is this a hidden column?
VIRTUAL_COLUMN	VARCHAR2	(3)		Is this a virtual column?
SEGMENT_COLUMN_ID	NUMBER			Sequence number of the column in the segment
INTERNAL_COLUMN_ID	NUMBER		Yes	Internal sequence number of the column
HISTOGRAM	VARCHAR2	(15)
QUALIFIED_COL_NAME	VARCHAR2	(4000)		Qualified column name
USER_GENERATED	VARCHAR2	(3)
DEFAULT_ON_NULL	VARCHAR2	(3)		Is this a default on null column?
IDENTITY_COLUMN	VARCHAR2	(3)		Is this an identity column?
SENSITIVE_COLUMN	VARCHAR2	(3)		Is this column sensitive?
EVALUATION_EDITION	VARCHAR2	(128)		Name of the evaluation edition assigned to the column expression
UNUSABLE_BEFORE	VARCHAR2	(128)		Name of the oldest edition in which the column is usable
UNUSABLE_BEGINNING	VARCHAR2	(128)		Name of the oldest edition in which the column becomes perpetually unusable

Query Text

Cut, paste (and edit) the following text to query this object:


SELECT OWNER
,      TABLE_NAME
,      COLUMN_NAME
,      DATA_TYPE
,      DATA_TYPE_MOD
,      DATA_TYPE_OWNER
,      DATA_LENGTH
,      DATA_PRECISION
,      DATA_SCALE
,      NULLABLE
,      COLUMN_ID
,      DEFAULT_LENGTH
,      DATA_DEFAULT
,      NUM_DISTINCT
,      LOW_VALUE
,      HIGH_VALUE
,      DENSITY
,      NUM_NULLS
,      NUM_BUCKETS
,      LAST_ANALYZED
,      SAMPLE_SIZE
,      CHARACTER_SET_NAME
,      CHAR_COL_DECL_LENGTH
,      GLOBAL_STATS
,      USER_STATS
,      AVG_COL_LEN
,      CHAR_LENGTH
,      CHAR_USED
,      V80_FMT_IMAGE
,      DATA_UPGRADED
,      HIDDEN_COLUMN
,      VIRTUAL_COLUMN
,      SEGMENT_COLUMN_ID
,      INTERNAL_COLUMN_ID
,      HISTOGRAM
,      QUALIFIED_COL_NAME
,      USER_GENERATED
,      DEFAULT_ON_NULL
,      IDENTITY_COLUMN
,      SENSITIVE_COLUMN
,      EVALUATION_EDITION
,      UNUSABLE_BEFORE
,      UNUSABLE_BEGINNING
FROM SYS.DBA_TAB_COLS;

Dependencies

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SYS.DBA_TAB_COLS references the following:

SYS: DBA_TAB_COLS_V$

SYS.DBA_TAB_COLS is referenced by following:

ORDSYS: CARTRIDGE - show dependent code
PUBLIC: DBA_TAB_COLS
SYS: DBA_LOGSTDBY_EDS_SUPPORTED; DBA_TAB_COLUMNS; DBA_TSTZ_TAB_COLS; DBMS_APPLY_ADM_INTERNAL - show dependent code; DBMS_INTERNAL_LOGSTDBY - show dependent code; DBMS_SODA_UTIL - show dependent code; XS_DIAG_INT - show dependent code