What symbols are used to connect strings in Oracle?

The symbol for connecting strings in Oracle is the plus sign ( ). The method of use is to concatenate strings with plus signs, such as 'Hello' || 'World'. Nested plus signs can be used to concatenate multiple strings. The CONCAT() function can also be used to concatenate strings, the syntax is: CONCAT(string1, string2, ..., stringN).

String connection symbols in Oracle

In Oracle, you can use the plus sign ( ) symbol to connect strings .

Usage method

Just connect the strings to be connected with the plus sign ( ). For example:

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

The result will be:

<code>Hello World</code>

Note

• For NULL values, the plus ( ) operator will return NULL .
• If you need to concatenate multiple strings, you can use nested plus signs ().
• You can also use the CONCAT() function to concatenate strings, the syntax is:

<code class="sql">CONCAT(string1, string2, ..., stringN)</code>

For example:

<code class="sql">SELECT CONCAT('Hello', ' ', 'World') FROM DUAL;</code>

The result will be:

<code>Hello World</code>

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