![]() From this article, we learned how and when we use PL/SQL length. From the above article, we have learned the basic syntax of length, and we also see different examples of the length. We hope from this article you learn PL/SQL length. The final output of the above procedure we illustrated by using the following screenshot as follows. Notice here the length () function counts the blank in the string. In the above example, we add five blank spaces in the declaration section, as shown in the above example, and we just execute the procedure. Sample_string string(100) := 'Welcome in PLSQL ' Now let’s one more example that contains the string as well as blank space as follows. In the above example, in the declare section, we declare a string variable containing the string “Welcome in PLSQL” as shown after that, we print that variable using dbms_output.put_line statement. Sample_string string(100) := 'Welcome in PLSQL' Now let’s see another example that contains the string as follows. Then, inside the execution section, we write a statement to display the length of the string in this example length of the string is 2. In the above example, we follow the same procedure as the above example in this example, we assign the two blank spaces as shown. Now let’s see another example as follows. Then, in the execution section, we write the procedure to display the length of strings by dbms_output.put_line statement after that, we end the procedure and execute the procedure. In the above example, we declare the string variable as sample_string as shown, here string size is 100 means we can store 100 characters, but in this example, we assign string as NULL, as shown in the above example. DECLAREĭbms_output.put_line(LENGTH(sample_string)) Now let’s see the different examples of length () function in PL/SQL for better understanding as follows.įirst, let’s see an example of a string with null as follows. The length () function is supported following the version of Oracle/PL/SQL. This method returns null if char is null. The length of char with the data type CHAR includes all trailing blanks. CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB are all valid data types for char, and they return value as NUMBER data type. LENGTH makes use of full Unicode characters. Instead of using letters, LENGTH utilizes bytes. LENGTH determines length based on the characters in the supplied character set. The LENGTH functions return the length of char. If the specified string is null, then the length () function returns the null value, and the specified string is the char data type, then it returns the length of the string with trailing blanks. ![]() Country_name varchar(100) īasically, we can provide a specified string to the length function as per our requirement in any one of the data types such as NCLOB, CHAR, NCHAR, CLOB, VARCHAR2, or NVARCHAR2.Īfter execution of the length () function, return a positive integer number that represents the length of the specified string. For example, the following code declares a variable with the VARCHAR2 data type to contain a country name that cannot exceed 100 characters. ![]() You must provide the maximum length of a variable-length string when declaring it. (Unicode is a universally encoded character set that may be used to store information in any language.) The data types with an ”N” prefix are “national character set” data types, which implies they hold Unicode character data. To declare a string variable, choose from Oracle Database’s various string data types, which include CHAR, NCHAR, VARCHAR2, NVARCHAR2, CLOB, and NCLOB. Now let’s see how we can declare a string in PL/SQL as follows.ĭeclare variables to hold string values in your PL/SQL applications when working with strings. Large items with a distinctive personality (CLOBs): CLOBs are long strings that may be up to 128 terabytes in length. Strings with varying lengths: The string’s maximum length (which must not exceed 32,767) is given, but no padding is applied. Strings with a set length: The declaration specifies that the text is right-padded with spaces to the length given in the declaration. In PL/SQL, there are three types of strings: To put it another way, the symbols in a string may be English letters like “A” or “B.” Now let’s see how length () function id works in PL/SQL as follows.Ī string, also known as character data, is a collection of symbols chosen from a set of characters. ![]()
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