
CREATE VIEW
v_sale_report_read_only
AS
SELECT
*
FROM
sale_report
WITH READ ONLY
-- 通过 SQL 语句, 为 视图 增加 备注信息。
COMMENT ON TABLE v_sale_report_read_only IS '测试视图的备注'
CREATE TABLE test_table (id INT,
val INT
)
COMMENT ON COLUMN test_table.ID IS '测试表编号'
COMMENT ON COLUMN test_table.val IS '测试表数值'
CREATE VIEW test_view
AS
SELECT * FROM test_table
COMMENT ON COLUMN test_view.ID IS '测试视图编号'
COMMENT ON COLUMN test_view.val IS '测试视图数值'
COLUMN "TABLE_NAME" FORMAT A20
COLUMN "COLUMN_NAME" FORMAT A20
COLUMN "COMMENTS" FORMAT A30
SELECT
TABLE_NAME,
COLUMN_NAME,
COMMENTS
FROM
USER_COL_COMMENTS
WHERE
TABLE_NAME = 'TEST_TABLE'
TABLE_NAME COLUMN_NAME COMMENTS
-------------------- -------------------- ------------------------------
TEST_TABLE ID 测试表编号
TEST_TABLE VAL 测试表数值
SELECT
TABLE_NAME,
COLUMN_NAME,
COMMENTS
FROM
USER_COL_COMMENTS
WHERE
TABLE_NAME = 'TEST_VIEW'
TABLE_NAME COLUMN_NAME COMMENTS
-------------------- -------------------- ------------------------------
TEST_VIEW ID 测试视图编号
TEST_VIEW VAL 测试视图数值
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