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Basic operations of database and table ----- delete index
2022-07-05 00:58:00 【Onion love code】
Basic operation of database and table ----- Delete index
** Review the contents of Chapter II ** Basic operation of database and table ----- Create and view databases
Basic operation of database and table ----- Modifying and deleting databases
Basic operation of database and table ----- Classification of data
Basic operation of database and table ----- Create data table
Basic operation of database and table ----- Look at the data sheet
Basic operation of database and table ----- Modify data sheet
Basic operation of database and table ----- Delete data table
Basic operation of database and table ----- Primary key constraint
Basic operation of database and table ----- Non empty constraint
Basic operation of database and table ----- Unique constraint
Basic operation of database and table ----- Default constraint
Basic operation of database and table ----- Set the field value of the table to increase automatically
Basic operation of database and table ----- The concept of index
Basic operation of database and table ----- Create index
Basic operation of database and table ----- Delete index
Basic operation of database and table ----- Phased test II
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Preface full name : Onion love code like :Java Programming Important things are to be repeated for 3 times !!! Welcome to visit , learn from each other Welcome to visit , learn from each other Welcome to visit , learn from each other Let's learn about database !!!
Cuddle wood , Born in the end ; A hundred feet platform , From the soil ; A journey , Begins with a single step .------《 Lao tze 》
Today's learning task !!!!!
1、 Master deleting index
One 、 Delete index
1、 Preface
2、 Method 1 of deleting the index
3、 The second way to delete the index
One quart a day !!!
Just as Xue Zhiqian is not easy to praise Mao
" You are now a meteor " , But I believe you , If you stick to it, you're a superstar "
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