I have table - config. Schema: config. I try like that: UPDATE config SET t1.config Is there a way to update multiple columns in SQL server the same way an insert statement is used? Something like: Update table1 set (a,b,c,d,e,f,g,h,i,j,k)= (t2.a,t2. This article lists out extensive list of example scripts for looping through table records one row at a time. This article covers the examples for the following. Brent Ozar Unlimited's specialized experts focus on your goals, diagnose your tough database pains, and make Microsoft SQL Server faster and more reliable.

Tuning PL/SQL Applications for Performance. PL/SQL sends SQL statements such as DML and queries to the SQL engine for execution, and SQL returns the results to PL/SQL. You can minimize the performance overhead of this communication between PL/SQL and SQL by using the PL/SQL features that are known collectively as bulk SQL. The FORALL statement sends INSERT, UPDATE, or DELETE statements in batches, rather than one at a time. The BULKCOLLECT clause brings back batches of results from SQL.

Describes cumulative update package 4 for SQL Server 2014 SP2.

If the DML statement affects four or more database rows, bulk SQL can improve performance considerably. Assigning values to PL/SQL variables in SQL statements is called binding.

PL/SQL binding operations fall into these categories: Bulk SQL uses PL/SQL collections to pass large amounts of data back and forth in single operations. This process is called bulk binding. If the collection has n elements, bulk binding uses a single operation to perform the equivalent of n. SELECTINTO, INSERT, UPDATE, or DELETE statements.

A query that uses bulk binding can return any number of rows, without requiring a FETCH statement for each one. To speed up INSERT, UPDATE, and DELETE statements, enclose the SQL statement within a PL/SQL FORALL statement instead of a LOOP statement. To speed up SELECTINTO statements, include the BULKCOLLECT clause.

• While most SQL server implementations allow multiple statements to be executed with one call in this way, some SQL APIs such as PHP's mysql
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Running One DML Statement Multiple Times (FORALL Statement)The keyword FORALL lets you run multiple DML statements very efficiently. It can only repeat a single DML statement, unlike a general- purpose FOR loop.

For full syntax and restrictions, see FORALL Statement. The SQL statement can reference more than one collection, but FORALL only improves performance where the index value is used as a subscript. Usually, the bounds specify a range of consecutive index numbers. If the index numbers are not consecutive, such as after you delete collection elements, you can use the INDICESOF or VALUESOF clause to iterate over just those index values that really exist. The INDICESOF clause iterates over all of the index values in the specified collection, or only those between a lower and upper bound. The VALUESOF clause refers to a collection that is indexed by PLS. The FORALL statement iterates over the index values specified by the elements of this collection.

The FORALL statement in Example 1. DELETE statements to the SQL engine at once. Example 1. 2- 2 Issuing DELETE Statements in a Loop. How To Seal Leaking Cracks In Basement Walls. CREATE TABLE employees.

Then it inserts the collection elements into a database table twice: first using a FOR loop, then using a FORALL statement. The FORALL version is much faster. Example 1. 2- 3 Issuing INSERT Statements in a Loop. CREATE TABLE parts. INTEGER, pname VARCHAR2(1.

CREATE TABLE parts. Macromedia Dreamweaver Mx 2004 Free Download Windows 7. INTEGER, pname VARCHAR2(1.

TYPE Num. Tab IS TABLE OF parts. TYPE INDEX BY PLS. The INDICESOF clause processes sparse collections by iterating through only the remaining elements.

You might also want to leave the original collection alone, but process only some elements, process the elements in a different order, or process some elements more than once. Instead of copying the entire elements into new collections, which might use up substantial amounts of memory, the VALUESOF clause lets you set up simple collections whose elements serve as pointers to elements in the original collection. Example 1. 2- 5 creates a collection holding some arbitrary data, a set of table names. Deleting some of the elements makes it a sparse collection that does not work in a default FORALL statement. The program uses a FORALL statement with the INDICESOF clause to insert the data into a table. It then sets up two more collections, pointing to certain elements from the original collection. The program stores each set of names in a different database table using FORALL statements with the VALUESOF clause.

Example 1. 2- 5 Using FORALL with Nonconsecutive Index Values. Create empty tables to hold order details. CREATE TABLE valid. However, if a raised exception is caught and handled, changes are rolled back to an implicit savepoint marked before each execution of the SQL statement.

Changes made during previous executions are not rolled back. For example, suppose you create a database table that stores department numbers and job titles, as shown in Example 1. Then, you change the job titles so that they are longer. The second UPDATE fails because the new value is too long for the column.

Because you handle the exception, the first UPDATE is not rolled back and you can commit that change. Example 1. 2- 6 Using Rollbacks with FORALL. CREATE TABLE emp.

For additional description of cursor attributes, see SQL Cursors (Implicit). The SQL cursor has one composite attribute, %BULK. This attribute works like an associative array: SQL%BULK?

For example, if FORALL uses the range 5. BULK. If the FORALL statement uses the INDICES OF clause to process a sparse collection, %BULK. If the FORALL statement uses the VALUES OF clause to process a subset of elements, %BULK. If the index collection contains duplicate elements, so that some DML statements are issued multiple times using the same subscript, then the corresponding elements of %BULK.

For the INSERTSELECT construct, %BULK. For example, the FORALL statement in Example 1. After each iteration, %BULK. For example, %ROWCOUNT returns the total number of rows processed by all executions of the SQL statement.%FOUND and %NOTFOUND refer only to the last execution of the SQL statement. You can use %BULK.

For example, when %BULK. This mechanism enables a bulk- bind operation to save information about exceptions and continue processing. To have a bulk bind complete despite errors, add the keywords SAVEEXCEPTIONS to your FORALL statement after the bounds, before the DML statement. Provide an exception handler to track the exceptions that occurred during the bulk operation. Example 1. 2- 9 shows how you can perform a number of DML operations, without stopping if some operations encounter errors. In the example, EXCEPTION. ORA- 2. 43. 81 is raised if any exceptions are caught and saved after a bulk operation.

All exceptions raised during the execution are saved in the cursor attribute %BULK. Each record has two fields: %BULK. The number of exceptions is saved in %BULK.

Its subscripts range from 1 to COUNT. The individual error messages, or any substitution arguments, are not saved, but the error message text can looked up using ERROR. For example, if you use the INDICESOF clause to process a sparse collection, you must step through the elements one by one to find the one corresponding to %BULK. If you use the VALUESOF clause to process a subset of elements, you must find the element in the index collection whose subscript matches %BULK. In that case, SQL%BULK. If no exception is raised during execution, SQL%BULK.

After the FORALL statement, SQL%BULK. Instead of looping through each row, you store the results in one or more collections, in a single operation. You can use the BULKCOLLECT clause in the SELECTINTO and FETCHINTO statements, and in the RETURNINGINTO clause. With the BULKCOLLECT clause, all the variables in the INTO list must be collections. The table columns can hold scalar or composite values, including object types. Example 1. 2- 1. 0 loads two entire database columns into nested tables.

Example 1. 2- 1. 0 Retrieving Query Results with BULK COLLECT. TYPE Num. Tab IS TABLE OF employees. Nested tables and associative arrays are extended to hold as many elements as needed. If you use varrays, all the return values must fit in the varray's declared size.

Elements are inserted starting at index 1, overwriting any existing elements. Because the processing of the BULKCOLLECTINTO clause is similar to a FETCH loop, it does not raise a NO. You must check whether the resulting nested table or varray is null, or if the resulting associative array has no elements, as shown in Example 1.

To prevent the resulting collections from expanding without limit, you can use the LIMIT clause to or pseudocolumn ROWNUM to limit the number of rows processed.