{"id":3842,"date":"2023-11-11T15:08:41","date_gmt":"2023-11-11T15:08:41","guid":{"rendered":"https:\/\/www.copahost.com\/blog\/?p=3842"},"modified":"2023-11-27T12:49:21","modified_gmt":"2023-11-27T12:49:21","slug":"delete-into-sql","status":"publish","type":"post","link":"https:\/\/www.copahost.com\/blog\/delete-into-sql\/","title":{"rendered":"DELETE INTO SQL: Deleting and adding data"},"content":{"rendered":"\n<p>DELETE INTO in SQL is a clause that allows you&nbsp;<strong>to delete records from a table.&nbsp;At the same time, it allows you to insert new records into another table<\/strong>&nbsp;.&nbsp;This clause is very useful for performing data cleaning operations or for creating new tables from existing data.<\/p>\n\n\n\n<p>When deleting records from a table, DELETE INTO ensures that only selected records are deleted, without affecting other important data.&nbsp;Additionally, inserting new records into a separate table allows deleted data to be preserved.&nbsp;For example, for audit or further analysis purposes.<\/p>\n\n\n\n<p>With DELETE INTO,&nbsp;<a href=\"https:\/\/www.copahost.com\/en\/\">database<\/a>&nbsp;developers can perform cleaning and optimization operations more efficiently and safely.<\/p>\n\n\n\n<p>In this article, we will explore in detail how to use DELETE INTO in different database scenarios.&nbsp;We will also show you how to avoid common mistakes when working with this clause.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Syntax\" title=\"Syntax\">Syntax<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Differences_between_the_DELETE_INTO_and_the_DELETE_command_without_INTO_in_SQL\" title=\"Differences between the DELETE INTO and the DELETE command without INTO in SQL\">Differences between the DELETE INTO and the DELETE command without INTO in SQL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Examples_of_using_DELETE_INTO\" title=\"Examples of using DELETE INTO\">Examples of using DELETE INTO<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Example_1_DELETE_INTO_SQL_duplicate_records_using\" title=\"Example 1: DELETE INTO SQL duplicate records using\">Example 1: DELETE INTO SQL duplicate records using<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Example_2_DELETE_INTO_SQL_old_records_and_update_others\" title=\"Example 2: DELETE INTO SQL old records and update others\">Example 2: DELETE INTO SQL old records and update others<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Example_3_DELETE_INTO_SQL_records_based_on_a_condition\" title=\"Example 3: DELETE INTO SQL records based on a condition\">Example 3: DELETE INTO SQL records based on a condition<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Example_4_DELETE_INTO_records_and_update_others_based_on_a_condition\" title=\"Example 4: DELETE INTO records and update others based on a condition\">Example 4: DELETE INTO records and update others based on a condition<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Advantages_and_Disadvantages_of_DELETE_INTO\" title=\"Advantages and Disadvantages of DELETE INTO\">Advantages and Disadvantages of DELETE INTO<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Advantages_of_DELETE_INTO\" title=\"Advantages of DELETE INTO:\">Advantages of DELETE INTO:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Disadvantages_of_DELETE_INTO\" title=\"Disadvantages of DELETE INTO:\">Disadvantages of DELETE INTO:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Alternatives_to_DELETE_INTO\" title=\"Alternatives to DELETE INTO\">Alternatives to DELETE INTO<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/#Security_considerations_when_using_DELETE_INTO_SQL\" title=\"Security considerations when using DELETE INTO SQL\">Security considerations when using DELETE INTO SQL<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Syntax\"><\/span>Syntax<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The syntax of the DELETE INTO command in SQL is as follows:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DELETE INTO destination\nFROM source\n&#091;WHERE condition];\n<\/code><\/pre>\n\n\n\n<p>The DELETE INTO command allows you to delete records from one table and insert them into another table.&nbsp;This eliminates the need to write a separate SELECT query and <a href=\"https:\/\/www.copahost.com\/blog\/update-sql\/\">UPDATE <\/a>query.<\/p>\n\n\n\n<p>The \u201cDELETE INTO destination\u201d part indicates that the records must be deleted from the source table and inserted into the destination table.&nbsp;Therefore, it is possible that the destination is an existing table or a table created only to store the deleted records.<\/p>\n\n\n\n<p>The \u201cFROM source\u201d part indicates the source table that will be deleted.&nbsp;This way, you can specify a specific table or a query that selects the table to delete.<\/p>\n\n\n\n<p>The \u201cWHERE condition\u201d part is optional and allows you to specify a condition that limits records to being excluded.&nbsp;This way, when the condition is specified, it will only delete records that meet the condition.<\/p>\n\n\n\n<p>It is important to note that the DELETE INTO command does not allow the deletion of records in tables that have established foreign keys.&nbsp;Thus, the deletion of records in tables with foreign keys is controlled by foreign key constraints.&nbsp;They prevent the deletion of records related to other records in other tables.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Differences_between_the_DELETE_INTO_and_the_DELETE_command_without_INTO_in_SQL\"><\/span>Differences between the DELETE INTO and the DELETE command without INTO in SQL<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>There is a difference between DELETE INTO statement and DELETE without INTO statement in SQL.&nbsp;The first allows you to insert new records into a table.&nbsp;The second only deletes records from the original table.<\/p>\n\n\n\n<p>When using the DELETE INTO statement, we can specify the destination table where the deleted records are inserted.&nbsp;This statement can be useful when we want to create a new table with differently formatted data.&nbsp;Or when you need to remove old records from a table and insert new data at the same time.<\/p>\n\n\n\n<p>On the other hand, the DELETE statement without INTO just removes records from the original table without inserting any new records into another table.&nbsp;Thus, this statement is useful when we need to remove specific records from the table.&nbsp;And we also don&#8217;t want to create a new table with the same data.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Example<\/h4>\n\n\n\n<p>Therefore, let&#8217;s consider the following example to illustrate the difference:<\/p>\n\n\n\n<p>Suppose we have the following \u201ccustomers\u201d table with some records:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>id<\/th><th>name<\/th><th>email<\/th><th>telephone<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>John<\/td><td><a href=\"mailto:joao@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">john@example.com<\/a><\/td><td>123456789<\/td><\/tr><tr><td>2<\/td><td>Maria<\/td><td><a href=\"mailto:maria@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">maria@example.com<\/a><\/td><td>987654321<\/td><\/tr><tr><td>3<\/td><td>Pedro<\/td><td><a href=\"mailto:pedro@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">pedro@example.com<\/a><\/td><td>111111111<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Now, suppose we need to remove John record. And also insert a new record with Pedro&#8217;s updated data in the \u201ccustomers\u201d table.&nbsp;In this sense, we will use the DELETE INTO statement and the DELETE without INTO statement to perform these operations:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DELETE INTO statement:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>DELETE INTO updated_clients\nFrom clients\nWHERE name = 'John';\n\nINSERT INTO customers (name, email, telephone)\nVALUES ('Pedro', 'pedro@example.com', '111111111');<\/code><\/pre>\n\n\n\n<p>In this example, we are using the DELETE INTO statement to delete John record from the \u201ccustomers\u201d table.&nbsp;And also insert a new record with Pedro updated data in the \u201cupdated_clients \u201d table.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DELETE statement without INTO:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>DELETE FROM customers\nWHERE name = 'John';<\/code><\/pre>\n\n\n\n<p>In this example, we are using the DELETE statement without INTO to delete John&#8217;s record from the \u201ccustomers\u201d table without inserting any new records.<\/p>\n\n\n\n<p>In summary, the DELETE INTO statement is useful when we need to remove old records and insert new data into a table.&nbsp;On the other hand, DELETE without INTO statement is useful when we need to remove specific records from the table without creating a new table.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Examples_of_using_DELETE_INTO\"><\/span>Examples of using DELETE INTO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Let&#8217;s consider some practical examples of how to use the DELETE INTO command in SQL in different situations.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Example_1_DELETE_INTO_SQL_duplicate_records_using\"><\/span>Example 1: DELETE INTO SQL duplicate records using<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Suppose we have the following \u201ccustomers\u201d table:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>id<\/th><th>name<\/th><th>email<\/th><th>telephone<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>John<\/td><td><a href=\"mailto:joao@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">john@example.com<\/a><\/td><td>123456789<\/td><\/tr><tr><td>2<\/td><td>Maria<\/td><td><a href=\"mailto:maria@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">maria@example.com<\/a><\/td><td>987654321<\/td><\/tr><tr><td>3<\/td><td>Pedro<\/td><td><a href=\"mailto:pedro@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">pedro@example.com<\/a><\/td><td>111111111<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Now, suppose we need to delete the duplicate records from the \u201ccustomers\u201d table based on the \u201cname\u201d field.&nbsp;We can use the DELETE INTO statement along with the JOIN function to identify the duplicate records and delete them from the table.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DELETE INTO customers\nFROM customers\nJOIN clients ON clients.name = clients_duplicates.name;\n\nUPDATE duplicate_clients\nSET id = (SELECT MAX(id) + 1 FROM customers)\nWHERE name IN ('John', 'Pedro');<\/code><\/pre>\n\n\n\n<p>In this example, we are using the DELETE INTO statement to delete the duplicate records from the \u201ccustomers\u201d table based on the \u201cname\u201d field.&nbsp;We developed a <a href=\"https:\/\/www.copahost.com\/blog\/join-sql\/\">JOIN&nbsp;<\/a>query&nbsp;to identify duplicate records.&nbsp;We then use the&nbsp;<a href=\"https:\/\/www.copahost.com\/blog\/update-sql\/\">UPDATE&nbsp;<\/a>statement to update the value of the \u201cid\u201d field of each duplicate record.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Example_2_DELETE_INTO_SQL_old_records_and_update_others\"><\/span>Example 2: DELETE INTO SQL old records and update others<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Suppose we have the following \u201csales\u201d table:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>id<\/th><th>product<\/th><th>value<\/th><th>data<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>Product 1<\/td><td>100<\/td><td>2022-01-01<\/td><\/tr><tr><td>2<\/td><td>Product 2<\/td><td>200<\/td><td>2022-01-02<\/td><\/tr><tr><td>3<\/td><td>Product 3<\/td><td>300<\/td><td>2022-01-03<\/td><\/tr><tr><td>4<\/td><td>Product 1<\/td><td>150<\/td><td>2022-02-01<\/td><\/tr><tr><td>5<\/td><td>Product 2<\/td><td>250<\/td><td>2022-02-02<\/td><\/tr><tr><td>6<\/td><td>Product 4<\/td><td>400<\/td><td>2022-02-03<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Now, suppose we need to delete the old sales records of Product 1 and Product 2 and update the sales records of Product 3 and Product 4. We can use the DELETE INTO statement along with the JOIN function to identify the old records&nbsp;and&nbsp;update the records relevant sales.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DELETE INTO sales\nFROM sales\nJOIN sales_old ON sales.product = sales_old.product AND sales.data &lt; sales_old.data;\n\nUPDATE sales\nSET value = 500\nWHERE product IN ('Product 3', 'Product 4') AND data &gt;= '2022-02-01';<\/code><\/pre>\n\n\n\n<p>In this example, we are using the DELETE INTO statement to delete the old sales records for Product 1 and Product 2 based on the \u201cold_sales\u201d table.&nbsp;Next, we are using the UPDATE statement to update the value of the \u201camount\u201d field of each relevant sales record for Product 3 and Product 4 based on the date of sale.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Example_3_DELETE_INTO_SQL_records_based_on_a_condition\"><\/span>Example 3: DELETE INTO SQL records based on a condition<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Suppose we have the following \u201ccustomers\u201d table:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>id<\/th><th>name<\/th><th>email<\/th><th>telephone<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>John<\/td><td><a href=\"mailto:joao@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">john@example.com<\/a><\/td><td>123456789<\/td><\/tr><tr><td>2<\/td><td>Maria<\/td><td><a href=\"mailto:maria@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">maria@example.com<\/a><\/td><td>987654321<\/td><\/tr><tr><td>3<\/td><td>Pedro<\/td><td><a href=\"mailto:pedro@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">pedro@example.com<\/a><\/td><td>111111111<\/td><\/tr><tr><td>4<\/td><td>John<\/td><td><a href=\"mailto:joao@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">john@example.com<\/a><\/td><td>123456789<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Now, suppose we need to delete all customer records with the email \u201c&nbsp;<a href=\"mailto:joao@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">john@example.com<\/a>&nbsp;\u201c.&nbsp;We can use the DELETE INTO statement together with the WHERE function to identify records to be deleted based on the condition of the \u201cemail\u201d field.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DELETE INTO customers\nFROM customers\nWHERE email = 'john@example.com';<\/code><\/pre>\n\n\n\n<p>In this example, we are using the DELETE INTO statement to delete all customer records with the email \u201c&nbsp;<a href=\"mailto:joao@example.com\" target=\"_blank\" rel=\"noreferrer noopener\">john@example.com<\/a>&nbsp;\u201c.&nbsp;We use the WHERE function to specify the exclusion condition based on the \u201cemail\u201d field.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Example_4_DELETE_INTO_records_and_update_others_based_on_a_condition\"><\/span>Example 4: DELETE INTO records and update others based on a condition<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Suppose we have the following \u201csales\u201d table:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>id<\/th><th>product<\/th><th>value<\/th><th>data<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>Product 1<\/td><td>100<\/td><td>2022-01-01<\/td><\/tr><tr><td>two<\/td><td>Product 2<\/td><td>200<\/td><td>2022-01-02<\/td><\/tr><tr><td>3<\/td><td>Product 3<\/td><td>300<\/td><td>2022-01-03<\/td><\/tr><tr><td>4<\/td><td>Product 1<\/td><td>150<\/td><td>2022-02-01<\/td><\/tr><tr><td>5<\/td><td>Product 2<\/td><td>250<\/td><td>2022-02-02<\/td><\/tr><tr><td>6<\/td><td>Product 4<\/td><td>400<\/td><td>2022-02-03<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Now, suppose we need to delete the old sales records of Product 1 and Product 2 and update the sales records of Product 3 and Product 4 based on the condition of the \u201cdate\u201d field.&nbsp;So, we can use the DELETE INTO statement along with the WHERE and JOIN function to identify the old records and update the relevant sales records.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DELETE INTO sales\nFROM sales\nJOIN sales_old ON sales.product = sales_old.product AND sales.data &lt; sales_old.data;\n\nUPDATE sales\nSET value = 500\nWHERE product IN ('Product 3', 'Product 4') AND data &gt;= '2022-02-01';<\/code><\/pre>\n\n\n\n<p>In this example, we are using the DELETE INTO statement to delete the old sales records for Product 1 and Product 2 based on the \u201cold_sales\u201d table.&nbsp;So, next, we are using the UPDATE statement to update the value of the \u201camount\u201d field of each relevant sales record for Product 3 and Product 4 based on the date of sale.&nbsp;This way, we use the WHERE function to specify the update condition based on the \u201cproduct\u201d field and the date condition.<\/p>\n\n\n\n<p>It is also possible to use other functions in conjunction with DELETE INTO, such as\u00a0<a href=\"https:\/\/www.copahost.com\/blog\/order-by-sql\/\">GROUP BY<\/a>\u00a0and\u00a0<a href=\"https:\/\/www.copahost.com\/blog\/count-sql\/\">COUNT<\/a>\u00a0.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advantages_and_Disadvantages_of_DELETE_INTO\"><\/span>Advantages and Disadvantages of DELETE INTO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>DELETE INTO is an SQL clause that allows you to delete records from a table.&nbsp;At the same time, it allows you to insert new records into another table.&nbsp;It is useful in situations where you want to delete records from a table and create a new table with the same data.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advantages_of_DELETE_INTO\"><\/span>Advantages of DELETE INTO:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Time Saving:<\/strong>&nbsp;You can delete records from a table and at the same time create a new table with the same data.&nbsp;This saves time compared to having to perform two separate operations.<\/li>\n\n\n\n<li><strong>Greater efficiency:<\/strong>&nbsp;DELETE INTO is more efficient than performing two separate operations.&nbsp;This is because the original table does not need to be loaded twice.<\/li>\n\n\n\n<li><strong>Ease of use:<\/strong>&nbsp;DELETE INTO is easy to use and can be written in just one line of code.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Disadvantages_of_DELETE_INTO\"><\/span>Disadvantages of DELETE INTO:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Resource limitations:<\/strong>&nbsp;DELETE INTO may be limited in terms of available system resources.&nbsp;This is because the operation of deleting and creating a new table can be resource intensive.<\/li>\n\n\n\n<li><strong>Data Loss:<\/strong>&nbsp;DELETE INTO deletes records from a table and then creates a new table with the same data.&nbsp;However, if an error occurs during operation, data loss may occur.<\/li>\n\n\n\n<li><strong>Complexity:<\/strong>&nbsp;DELETE INTO can be complex to understand and use correctly.&nbsp;This is because the operation of deleting and creating a new table can be complex and requires advanced knowledge of SQL.<\/li>\n<\/ol>\n\n\n\n<p>In summary, DELETE INTO is a useful and efficient SQL clause that can save time and resources in specific situations.&nbsp;However, we must use it with care!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Alternatives_to_DELETE_INTO\"><\/span>Alternatives to DELETE INTO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>There are some alternatives to DELETE INTO in SQL that we can apply depending on the situation.&nbsp;Some of these alternatives are:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>TRUNCATE<\/strong>&nbsp;: TRUNCATE is an SQL clause that allows you to delete all records from a table.&nbsp;TRUNCATE is more efficient than DELETE because it does not delete records one by one.&nbsp;However, TRUNCATE is not recursive.&nbsp;Therefore, we cannot be using it to create a new table with the same data.<\/li>\n\n\n\n<li><strong>INSERT INTO<\/strong>&nbsp;: INSERT INTO is a SQL clause that allows you to insert records into a table.&nbsp;INSERT INTO may be applied to create a new table with the same data as an existing table.&nbsp;However, this requires the existing table to be loaded twice, which may be less efficient than DELETE INTO.<\/li>\n\n\n\n<li><strong>SELECT INTO<\/strong>&nbsp;: SELECT INTO allows you to select records from a table and, at the same time, create a new table with the same data.&nbsp;SELECT INTO is similar to INSERT INTO, but it allows you to select specific records from a table to insert them into a new table.&nbsp;However, SELECT INTO may be less efficient than DELETE INTO.&nbsp;Because it requires the existing table to be loaded twice.<\/li>\n\n\n\n<li><strong>MERGE<\/strong>&nbsp;: MERGE is an SQL clause that allows you to combine data from two tables.&nbsp;MERGE can be applied to delete records from a table and, at the same time, insert new records into another table.&nbsp;However, MERGE may be less well-known and less common than DELETE INTO.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Security_considerations_when_using_DELETE_INTO_SQL\"><\/span>Security considerations when using DELETE INTO SQL<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Key security considerations when using the DELETE INTO command in SQL include the&nbsp;<strong>possibility of accidentally deleting important records<\/strong>&nbsp;.&nbsp;This is because DELETE INTO allows you to delete records from one table and, at the same time, insert new records into another table.&nbsp;Thus, leading to accidental deletion of important records if we are not careful while using the clause.<\/p>\n\n\n\n<p>Another important security consideration is verifying data before deleting records.&nbsp;It is important&nbsp;<strong>to check that the records that will be deleted are actually the correct ones and that they will not be needed in the future<\/strong>&nbsp;.&nbsp;In this sense, deleting important records by mistake can lead to significant problems in a system.<\/p>\n\n\n\n<p>It is also important&nbsp;<strong>to have a data backup before using DELETE INTO<\/strong>&nbsp;.&nbsp;Therefore, if an error occurs during operation, data may be lost.&nbsp;Having a data backup allows data to be restored if necessary.<\/p>\n\n\n\n<p>In summary, the main security considerations when using the DELETE INTO command in SQL include checking data before deleting records.&nbsp;Also verifying data before inserting records and having a data backup to restore if necessary.&nbsp;Therefore, these measures help minimize the risk of accidental deletion of important records.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DELETE INTO in SQL is a clause that allows you&nbsp;to delete records from a table.&nbsp;At the same time, it allows you to insert new records into another table&nbsp;.&nbsp;This clause is very useful for performing data cleaning operations or for creating new tables from existing data. When deleting records from a table, DELETE INTO ensures that [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":3853,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[91],"tags":[],"class_list":["post-3842","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DELETE INTO SQL: Deleting and adding data - Copahost<\/title>\n<meta name=\"description\" content=\"Learn how to use DELETE INTO to delete records from one table and insert new data with different formats into another in SQL!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.copahost.com\/blog\/delete-into-sql\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DELETE INTO SQL: Deleting and adding data - 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