I've got a classic Parent-Child relation that I would like to CRUD by using asp:GridView controls. If you are displaying records of a table then at the same time you can display number of records. Here are the sql dump of product tables Showing Number of records while displaying records using select query and PHP MySQLI SELECT product, count(product_sale.product_id) as no FROM `product` left Join product_sale on product_sale.product_id=product.product_id group by product.product_id In above case there is no information about the products for which there is no record available in our sales table.īy Left join of tables. We will get the number of records by linking these two tables.īy using where condition SELECT product, count(product_sale.product_id) as no FROM `product`, product_sale where product_sale.product_id=product.product_id group by product.product_id We have two tables, one is storing products (table name product) and other one is storing sales record ( table name sale). We will use if condition checking to create a grid view.ĬOUNT(if(class='Three',1,NULL)) as THREE,ĬOUNT(if(class='Seven',1,NULL)) as SEVEN,ĬOUNT(if(class='Eight',1,NULL)) as EIGHT,
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WHERE DATE_PL BETWEEN '$dt1' AND '$dt2' Download the SQL dump of the above student table Creating grid view by showing rows as columns SELECT COUNT(S_NO) AS no_tickets FROM main_table This query will return the number of records found between two date ranges. Danger This alert box indicates a dangerous or potentially. Warning This alert box indicates a warning that might need attention. Info This alert box indicates a neutral informative change or action.
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Here is the code to change the date format and the query. Bootstrap 4 provides an easy way to create predefined alert messages: Success This alert box indicates a successful or positive action. We will keep two variables as $dt1 and $dt2 with two dates. Records between two date ranges ( PHP Script ) SELECT COUNT(id) AS total_records FROM student Counting number of distinct ( unique ) records SELECT COUNT( DISTINCT class ) FROM student So if we apply count to this id filed then it will more efficient. In our student table we have id field which is unique and auto incremented. In above query we have used all the columns to find out the total number of records ( by using count(*) ). Using BETWEEN SELECT count(*) FROM `student` WHERE class='Four'
SELECT count(*) FROM `student` WHERE class='Four' and mark >60 We can count the records in different combinations like finding out the number of students of class four who has got more than 60 mark. GROUP BY clause to display totals of each class. Require to display total of each class in a table so here we have to use Here since we areĭisplaying only one count for a fixed class so we can use this way. This will return the count of students in class four only. Related Tutorial GROUP BY count Number of rows mysql table