String contains in sql; how to store-SQL-php.cn

String contains in sql; how to store

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Release： 2024-05-08 10:00:29

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When storing a string containing a semicolon in SQL: Use the escape character () to escape the semicolon (;). Use the || operator to concatenate strings containing semicolons. In some cases, use double quotes (") to enclose strings and escape each semicolon.

String contains in sql; how to store

Semicolons included in SQL String storage method

In SQL, the semicolon (;) is a special character that separates statements. If you want to store a semicolon in a string, you need to use the escape character

##Escape Character

The escape character is used to tell the SQL interpreter that the following character has a special meaning and should not be interpreted literally. In SQL, the backslash ( \) is used as an escape character.

Escape semicolon

To escape a semicolon, just precede the semicolon with a backslash. For example:

<code class="sql">SELECT 'Hello\;World' FROM table_name;</code>

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This will return the string "Hello;World"

String concatenation

If you want to combine a string containing a semicolon with another. For string concatenation, you can use the || operator. This operator will concatenate two strings. For example:

<code class="sql">SELECT 'Hello' || '\;' || 'World' FROM table_name;</code>

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This will return the string "Hello;World". ##Other Notes

In some cases, it may be necessary to use double quotes (") instead of single quotes (') to quote strings.

If the string contains multiple semicolons, each semicolon needs to be escaped.

Be sure to pay attention to the use of escape characters as it may cause syntax errors.

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