How many tables will create when we create table, what are they?

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What is difference between mysql and mysqli?

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How to create table show example

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The table tbl_sites contains the following data: ----------------------------------------------------- Userid sitename country ------------------------------------------------------ 1 sureshbabu indian 2 PHPprogrammer andhra 3 PHP.net usa 4 PHPtalk.com germany 5 MySQL.com usa 6 sureshbabu canada 7 PHPbuddy.com pakistan 8. PHPtalk.com austria 9. PHPfreaks.com sourthafrica 10. PHPsupport.net russia 11. sureshbabu australia 12. sureshbabu nepal 13. PHPtalk.com italy Write a select query that will displayed the duplicated site name and how many times it is duplicated?

4 Answers   Afixi, GE,

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How to create a new table in mysql?

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What is the purpose of using a heap table?

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mysql> select * from store; +------+-------+-------+ | id | month | sales | +------+-------+-------+ | 1 | 1 | 100 | | 1 | 2 | 100 | | 1 | 3 | 200 | | 1 | 4 | 300 | | 1 | 5 | NULL | | 1 | 6 | 200 | | 1 | 7 | 800 | | 1 | 8 | 100 | | 1 | 9 | 240 | | 1 | 10 | 140 | | 1 | 11 | 400 | | 1 | 12 | 300 | | 2 | 1 | 300 | | 2 | 2 | 300 | | 2 | 3 | 300 | | 2 | 4 | 200 | | 2 | 5 | 200 | | 2 | 6 | 200 | | 2 | 7 | 100 | | 2 | 8 | 100 | | 2 | 9 | 300 | | 2 | 10 | 100 | | 2 | 11 | 150 | | 2 | 12 | 150 | +------+-------+-------+ this is my table. i need to display output like this. +------+----------+----------+----------+----------+ | id | quarter1 | quarter2 | quarter3 | quarter4 | +------+----------+----------+----------+----------+ | 1 | 400 | 500 | 1140 | 840 | | 2 | 900 | 600 | 500 | 400 | +------+----------+----------+----------+----------+ what single query i have to write for this. i tried this query and it displays like the below mysql> select id,sum(sales) as quarter1,(select sum(sales) from store where mont h>3 and month<7 ) as quarter2,(select sum(sales) from store where month>6 and mo nth<10)as quarter3 from store where month>0 and month<4 group by id; +------+----------+----------+----------+ | id | quarter1 | quarter2 | quarter3 | +------+----------+----------+----------+ | 1 | 400 | 1100 | 1640 | | 2 | 900 | 1100 | 1640 | +------+----------+----------+----------+ 2 rows in set (0.00 sec) tel me how to rectify it.

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Explain % and _ inside like statement?

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What is a table schema?

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What mysql -u john -p command does?

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at first i'm using datediff('d', a.due_date, current_date); but it takes too long to get the result but how can i subtract the current_date - a.due_date and still get the same result like when i use datediff? thank you

1 Answers  

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Is oracle better than mysql?

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