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What is difference between update and replace?

@CodeGrepperManu answered on August 16, 2022 Popularity 3/10 Helpfulness 8/10

answer What is difference between update and replace?

What is difference between update and replace?

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What is difference between update and replace and insert set and select insert?

Insert: Insert new record in the table
Update: Update existing record available in the table
Replace: Replace will works exactly like INSERT, except that if an old record in the table has the same value as a new record for a PRIMARY KEY or a UNIQUE index, the old row is deleted before the new row is inserted
Insert Set: To insert values into the specific columns, we can use the SET clause instead of the VALUES clause.
INSERT INTO users SET ID=2, FirstName='UserFName2';
Select Insert: Using the SELECT clause in the MySQL INSERT INTO statement allows inserting the record generated by the SELECT statement into the target MySQL table.
Eg: INSERT INTO cusomers SELECT * FROM users;

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Contributed on Aug 16 2022

@CodeGrepperManu

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