FND_HISTOGRAM_COLS
Contains the list of Histogram candidate columns for cost-based optimization.
Details
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Schema: FUSION
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Object owner: FND
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Object type: TABLE
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Tablespace: REFERENCE
Columns
| Name | Datatype | Length | Not-null | Comments |
|---|---|---|---|---|
| TABLE_NAME | VARCHAR2 | 30 | Yes | Name of table potentially containing skewed data. |
| COLUMN_NAME | VARCHAR2 | 255 | Yes | Name of column that is a candidate for a histogram. |
| PARTITION | VARCHAR2 | 30 | Partition name if table is a partitioned table. | |
| HSIZE | NUMBER | Bucket size for the histogram. | ||
| CREATION_DATE | TIMESTAMP | Yes | Who column: indicates the date and time of the creation of the row. | |
| CREATED_BY | VARCHAR2 | 64 | Yes | Who column: indicates the user who created the row. |
| LAST_UPDATE_DATE | TIMESTAMP | Yes | Who column: indicates the date and time of the last update of the row. | |
| LAST_UPDATED_BY | VARCHAR2 | 64 | Yes | Who column: indicates the user who last updated the row. |
| LAST_UPDATE_LOGIN | VARCHAR2 | 32 | Who column: indicates the session login associated to the user who last updated the row. |
Indexes
| Index | Uniqueness | Tablespace | Columns |
|---|---|---|---|
| FND_HISTOGRAM_COLS_U1 | Unique | Default | TABLE_NAME, COLUMN_NAME, PARTITION |