Oracle updating records within same cursor Websites for free sex chating ithout sign up or registering

05-Mar-2020 17:55

Cursor Variables A cursor variable is, as you might guess from its name, a variable that points to a cursor or a result set.

Unlike with an explicit cursor, you can pass a cursor variable as an argument to a procedure or a function.

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You must, of course, use the SQL language to access tables, and each time you do so, you use a to get the job done.

Using the Cursor FOR Loop The cursor FOR loop is an elegant and natural extension of the numeric FOR loop in PL/SQL.

With a numeric FOR loop, the body of the loop executes once for every integer value between the low and high values specified in the range.

This article focuses on the most-common ways programmers execute SELECT statements in PL/SQL, namely At the end of the article, I offer some quick tips to help you figure out which of these techniques you should use for different scenarios.

SELECT-INTO SELECT-INTO offers the fastest and simplest way to fetch a single row from a SELECT statement. If the SELECT statement identifies more than one row to be fetched, Oracle Database will raise the TOO_MANY_ROWS exception.

You must, of course, use the SQL language to access tables, and each time you do so, you use a to get the job done.Using the Cursor FOR Loop The cursor FOR loop is an elegant and natural extension of the numeric FOR loop in PL/SQL.With a numeric FOR loop, the body of the loop executes once for every integer value between the low and high values specified in the range.This article focuses on the most-common ways programmers execute SELECT statements in PL/SQL, namely At the end of the article, I offer some quick tips to help you figure out which of these techniques you should use for different scenarios.SELECT-INTO SELECT-INTO offers the fastest and simplest way to fetch a single row from a SELECT statement. If the SELECT statement identifies more than one row to be fetched, Oracle Database will raise the TOO_MANY_ROWS exception.You can also use EXECUTE IMMEDIATE to fetch multiple rows of data, which means that you will populate a collection, so you must use BULK COLLECT.