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SELECT t.table_name,t.comments FROM USER_TAB_COMMENTS t WHERE TABLE_NAME = 'SS_DEPT';
9 Απρ 2021 · Find detailed explanations of how the different SQL JOIN types work, clear descriptions of the syntax, and a thorough discussion of the results.
25 Ιαν 2024 · Question: What is a SQL Join? A SQL JOIN clause combines data from two or more tables into a single dataset. Records are matched (i.e. joined) based on a given condition. For example, you could join the book and author tables based on the author's ID equal in both tables.
Use the COMMENT statement to add to the data dictionary a comment about a table or table column, unified audit policy, edition, indextype, materialized view, mining model, operator, or view. To drop a comment from the database, set it to the empty string ' '.
18 Σεπ 1996 · Here are the different types of the JOINs in SQL: (INNER) JOIN: Returns records that have matching values in both tables. LEFT (OUTER) JOIN: Returns all records from the left table, and the matched records from the right table.
25 Σεπ 2020 · Self-JOIN. Non-equi self-JOIN. Multiple JOINs. JOIN & JOIN. JOIN & LEFT JOIN. LEFT JOIN & LEFT JOIN. JOIN with multiple conditions. Ready to master SQL JOINs? Get your downloadable cheat sheet now! Your shortcut to becoming an SQL JOINs expert is one click away.
16 Μαΐ 2013 · o <USER|ALL|DBA>_TAB_COMMENTS for tables. o <USER|ALL|DBA>_COL_COMMENTS for columns. This example shows how to put a comment on a table or column and then retrieve that information. I'm using the USER_ views since the owner of the table is the same as the currently logged in user.
