4.123 ALL_TAB_COLUMNS
ALL_TAB_COLUMNS
describes the columns of the tables, views, and clusters accessible to the current user.
To gather statistics for this view, use the DBMS_STATS
package.
This view filters out system-generated hidden columns. The ALL_TAB_COLS
view does not filter out system-generated hidden columns.
Related Views
-
DBA_TAB_COLUMNS
describes the columns of all tables, views, and clusters in the database. -
USER_TAB_COLUMNS
describes the columns of the tables, views, and clusters owned by the current user. This view does not display theOWNER
column.
Column | Datatype | NULL | Description |
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Owner of the table, view, or cluster |
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Name of the table, view, or cluster |
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Column name |
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Data type of the column |
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Data type modifier of the column |
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Owner of the data type of the column |
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Length of the column (in bytes) |
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Decimal precision for |
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Digits to the right of the decimal point in a number |
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Indicates whether a column allows NULLs. The value is |
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Sequence number of the column as created |
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Length of the default value for the column |
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Default value for the column |
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Default value for the column This column may truncate the default value. |
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Number of distinct values in the column. This column remains for backward compatibility with Oracle7. This information is now in the |
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Low value in the column. This column remains for backward compatibility with Oracle7. This information is now in the |
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High value in the column. This column remains for backward compatibility with Oracle7. This information is now in the |
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If a histogram is available on If a histogram is not available on This column remains for backward compatibility with Oracle7. This information is now in the |
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Number of NULLs in the column |
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Number of buckets in the histogram for the column Note: The number of buckets in a histogram is specified in the |
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Date on which this column was most recently analyzed |
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Sample size used in analyzing this column |
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Name of the character set:
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Declaration length of the character type column |
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Indicates whether statistics were entered directly by the user ( |
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Average length of the column (in bytes) |
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Displays the length of the column in characters. This value only applies to the following datatypes:
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Indicates that the column uses
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Indicates whether the column data is in release 8.0 image format ( |
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Indicates whether the column data has been upgraded to the latest type version format ( |
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Indicates existence/type of histogram:
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Indicates whether the column has |
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Indicates whether the column has |
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Indicates whether the column is a reservable column ( |
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Indicates whether the column is an identity column ( |
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Name of the edition in which editioned objects referenced in an expression column are resolved |
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Name of the oldest edition in which the column is usable |
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Name of the oldest edition in which the column becomes perpetually unusable |
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Collation for the column. Only applies to columns with character data types. |
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If a data use case domain is specified for the column, the owner of the data use case domain |
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If a data use case domain is specified for the column, the name of the data use case domain |
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If a data use case domain is specified for the column, the name of the data use case domain column |
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If a data use case domain is specified for the column, the domain association ID |
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Indicates the number of vectors and their data type in an ONNX model Format: Example: |
See Also:
-
Oracle Database PL/SQL Packages and Types Reference for more information about the
DBMS_STATS
package