Mysql cursor example insert

Cursor _name: name of the cursor. SELECT LAST_ INSERT _ID() The purpose of this stored procedure is to demonstrate using a CURSOR to evaluate and insert data into multiple tables. Step 2: Now create the cursor. Below is a function that uses this cursor. PK),name,mark,address.

SELECT statement returns a set of rows which is called a result set. However, sometimes, you may want to process a data set on a row by row basis. SQL works based on set e. This is where cursors come into play. DECLARE curCURSOR FOR SELECT i FROM test. Insert data from a cursor.

CREATE TABLE Employee. Related examples in the same. Creating a cursor object using the cursor() method cursor = conn. To insert multiple rows into a table, use the executemany() method. Is there any restriction in place to use many SELECT INTO statment here.

Thir you fetch a record from cursor to begin the data processing. Fourth, is the data process that is unique to each set of logic. This could be inserting, updating, deleting, etc. A cursor can’t be used by itself in MySQL.

It is an essential component in stored procedures. With cursors, we can traverse a dataset and manipulate each record to accomplish certain tasks. Sidenote : Where are weekly_com and monthly_com coming from ? The order of values must be in the same order as specified when creating the cursor. When updating fields, if the incoming values match the type of fiel the values will be cast as necessary.

For example , a value of 1. INSENSITIVE: Once the cursor is opene it does not have sensitivity to inserts, updates, or deletions of rows underlying its result table. In Oracle you could use a so-called cursor attribute. The cursor is read-only and a temporary result is created.

And after opened the cursor we fetch the record one by one from cursor. And then insert these record in Emptable. Dropping EMPLOYEE table if already exists. Syntax: cursor _object.

This example shows how to insert new data. This sketch simulates storing data from a sensor in a table. In this case, we supply the values dynamically.

For this, we will create a special database and table for testing.