In the above SQL query, the number_of_rows indicates the number of rows to return, while the offset_value shows the number of rows the query should skip before returning them. The example below shows how to use
Following sample demonstrates how to update several records from Dept table simultaneously using parameter of PL/SQL Table type. Here is SQL statement used at our sample: DECLARE i INTEGER; BEGIN i:= 1; FOR rec IN (SELECT DeptNo FROM Scott.Dept WHERE RowNum <= 10 ORDER BY DeptNo) LOOP...
You’ll also see that these anti-patterns stem from performance concerns and that, besides the “manual” approach to improving SQL queries, you can analyze your queries also in a more structured, in-depth way by making use of some other tools that help you to see the query plan; And, ...
User variables, even though not part of standard SQL, are great objects in MySQL. They allow to keep some “state” for the life of a session: a session can execute a statement to compute a value, store that value in a user variable, and use it in all next statements. This av...
How to compare string in PL/SQL -- You just need one equals, not twoIF SHIPMENT_EXPEDITE='PD'THENDBMS_OUTPUT.PUT_LINE('Same');ENDIF; Oracle / PLSQL: REPLACE Function -- https://www.techonthenet.com/oracle/functions/replace.phpREPLACE( string1, string_to_replace [, replacement_string...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data sourc...
Even though SQL Server is proprietary software, Microsoft has provided a lot of ways to understand it and use it efficiently. If the hardware is OK and the installation has been done properly, but SQL Server performance is still inadequate, then in order to speed up SQL Server, we need to...
OVER( ORDER BY to_step_id ) as step_order, to_step_id as step_id FROMSteps_CTE ) step_order ON step_order.step_id = steps.step_id; Now, how can I reference this CTE (if it is not stored in SQL Server metadata) in Crystal Reports as a source, as I did it in Oracle. Can...
My plsql code : [code] set serveroutput on size unlimited; declare n table.numrum%type; sqlqry clob; cols clob; res clob; begin select d.numrum, listagg(''' || d.diag || ''' AS DIAG' || rownum, ',') WITHIN GROUP (ORDER BY d.numrum) into n, cols from...
See also this SQLFiddle This table can then be used in any type of select. Now that’s pretty dumb but straightforward, right? I mean, how many actual records are you going to put in there? By using a VALUES() table constructor ...