declarev_salnumber;beginselectt.salintov_salfromscott.emp twhererownum<=1; dbms_output.put_line(v_sal);end;
TheSELECTINTOstatement retrieves data from one or more database tables, and assigns the selected values to variables or collections. For a full description of theSELECTstatement, seeOracle Database SQL Reference. In its default usage (SELECT ... INTO), this statement retrieves one or more colu...
A SELECT ... BULK COLLECT INTO statement can return multiple rows. You must set up collection variables to hold the results. You can declare associative arrays or nested tables that grow as needed to hold the entire result set. The implicit cursor SQL and its attributes %NOTFOUND, %FOUND, ...
The SELECT ... INTO form of SELECT enables a query result to be stored in variables or written to a file: SELECT ... INTO var_list selects column values and stores them into variables. SELECT ... INTO OUTFILE writes the selected rows to a file. Column and line terminators can be ...
value must be an integer expression not containing any variables, aggregate functions, or window functions. The value must not be null or negative; but it can be zero, which selects the current row itself. Beware that the ROWS options can produce unpredictable results if the ORDER BY ordering...
When performing a flashback query, Oracle Database might not use query optimizations that it would use for other types of queries, which could have a negative impact on performance. In particular, this occurs when you specify multiple flashback queries in a hierarchical query. Restrictions on Fla...
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Oracle Real Application Cluster (RAC) brings an innovative approach to the challenges of rapidly increasing amounts of data and demand for high performance. Oracle RAC uses a scale-out model in which active-active clusters utilize multiple servers to deliver high performance, scalability, and ...
Please make sure that the page_size is already set when invoking the function, so that we can get correct page_size from the buffer page when adding a block into LRU */ void buf_LRU_add_block(buf_page_t *bpage, /*!< in: control block */ ibool old) /*!< in: TRUE if should...
If it is possible that the statement may retrieve multiple rows, you can use LIMIT 1 to limit the result set to a single row. SELECT id, data INTO @x, @y FROM test.t1 LIMIT 1;User variable names are not case-sensitive. See Section 9.4, “User-Defined Variables”. ...