MariaDB Select Where Not Empty

In this MariaDB tutorial, we will discuss the implementation of the MariaDB Select Where Not Empty and also look at several examples related to it. There are lists of the topic that comes under discussion:

• MariaDB Select Where Not Empty
• MariaDB Select Where Not Null
• MariaDB Select Where Not Empty And Not Null
• MariaDB Select Where Not Empty Error
• MariaDB Select Where Not Empty Group By
• MariaDB Select Where Not Empty JSON
• MariaDB Select Where Not Empty Like
• MariaDB Select Where Not Empty Partition By
• MariaDB Select Where Not Empty Year

Also, check the latest tutorial on MariaDB: MariaDB If statement in Select

MariaDB Select Where Not Empty

In this section, we will learn and understand how to use the MariaDB SELECT statement with the WHERE condition to find not empty values in the table by the query. And it is explained with the help of an illustrated example.

In MariaDB, the WHERE condition is used to retrieve records from the SELECT statement. It is also used with the UPDATE, DELETE and INSERT statements. And the MariaDB NOT EQUAL operator is used to find non-null values or non-empty values in the table.

First, we will see the USA_FAZZRO_COMPANY table by the following query:

SELECT * FROM USA_FAZZRO_COMPANY;

The MariaDB SELECT statement will retrieve all records from the USA_FAZZRO_COMPANY table.

Here is a sample example of the MariaDB SELECT statement with the WHERE condition to find the not empty value in the table by the following query:

EXAMPLE:

SELECT * FROM USA_FAZZRO_COMPANY
WHERE FULL_NAME != ' ';

The WHERE condition was used in the previous query to extract all records from the USA_FAZZRO_COMPANY database using the SELECT statement. The FULL_NAME column is utilized with the NOT EQUAL operator in the WHERE condition to discover empty values in the USA_FAZZRO_COMPANY table.

The SELECT statement will obtain all data from the USA_FAZZRO_COMPANY table if the WHERE condition is TRUE.

In this section, we have understood how to use the MariaDB SELECT statement with the WHERE condition to find an empty value in the USA_FAZZRO_COMPANY table in the query. And it is explained with the help of an example for a better understatement of this sub-topic.

Read: MariaDB Insert Into Select

MariaDB Select Where Not Null

In this section, we will understand and learn how to use the MariaDB SELECT statement with the IS NOT NULL condition in the query. And it is explained with the help of an illustrated example.

In MariaDB, the IS NOT NULL condition is used to test non-null values by using the SELECT statement. It is also used with the UPDATE, INSERT and DELETE statements. Here is an illustrated example of the MariaDB SELECT statement with the IS NOT NULL condition of the table by the following query:

EXAMPLE:

SELECT * FROM USA_FAZZRO_COMPANY
WHERE FULL_NAME IS NOT NULL;

As we see in the above query, we have used the SELECT statement to retrieve all records from the USA_FAZZRO_COMPANY table. In the WHERE condition, the FULL_NAME column is used with the IS NOT NULL condition to find non-NULL values in the USA_FAZZRO_COMPANY table.

The SELECT statement will retrieve all records from the USA_FAZZRO_COMPANY table if the WHERE condition gets TRUE.

In this tutorial, we have understood how to use the MariaDB SELECT statement with the WHERE condition to find an empty value in the query. And for better understanding, we have used an example to explain it properly.

Read: MariaDB Delete From Statement

MariaDB Select Where Not Empty And Not Null

Here we will understand and learn how to use the MariaDB SELECT statement with the IS NOT NULL condition which will help to find non-empty value in the table. And which is explained with the help of an illustrated example.

In MariaDB, the IS NOT NULL condition is used to test non-null values by using the SELECT statement. It is also used with the UPDATE, INSERT and DELETE statements. Let’s have a look at the MariaDB SELECT statement with the IS NOT NULL condition to find a non-empty value in the table by the following query:

EXAMPLE:

SELECT FULL_NAME, EXPIRING_DATE FROM USA_FAZZRO_COMPANY
WHERE FULL_NAME != ' ' 
AND FULL_NAME IS NOT NULL;

In this query, the SELECT statement will retrieve all records of the FULL_NAME and EXPIRING_DATE columns from the USA_FAZZRO_COMPANY table. In the WHERE condition, the FULL_NAME is used with the NOT EQUAL operator to find a non-empty value in the USA_FAZZRO_COMPANY table.

And we have also used the IS NOT NULL condition again with the FULL_NAME column of the USA_FAZZRO_COMPANY table. The SELECT statement will retrieve all records from the USA_FAZZRO_COMPANY table if the WHERE condition gets TRUE.

We hope you’ve learned how to utilize the MariaDB SELECT statement to locate non-empty and non-NULL values in the USA_FAZZRO_COMPANY table using the IS NOT NULL condition and the NOT EQUAL operator. We chose an example above and explained it in detail to help you grasp the subtopic.

Read: MariaDB Case Statement

MariaDB Select Where Not Empty Error

Here we will understand and learn why the error arises in the MariaDB SELECT statement with the IS NULL condition to find a non-empty value by the query. And which is explained with the help of a sample example.

In MariaDB, the IS NULL condition is used to test the NULL value by the SELECT statement. It is also used with the UPDATE, DELETE and INSERT statements.

Here is a sample example of why an error arises in the MariaDB SELECT statement with the IS NULL condition to find a non-empty value by the following query:

ERROR EXAMPLE:

SELECT FIRST_NAME, PHYSICS, MATHS FROM MIT_STUDENTS
WHERE PHYSICS IS NULL(NULL,0)
LIMIT 10;

As we see in the above query, the error arose because of the IS NULL condition in the MIT_STUDENTS. This brings the logical error and also syntax error which is against the MariaDB documentation of the SELECT statement.

Here is a sample example of the MariaDB SELECT statement with the IS NULL condition to remove the error and to find a non-empty value by the following query:

ERROR REMOVED EXAMPLE:

SELECT FIRST_NAME, PHYSICS, MATHS FROM MIT_STUDENTS
WHERE PHYSICS IS NULL
LIMIT 10;

in this query, the SELECT statement will retrieve all records of the FIRST_NAME, PHYSICS, and MATHS columns from the MIT_STUDENTS table. In the WHERE condition, the PHYSICS column is used with the IS NULL condition to find the NULL value in the MIT_STUDENTS table.

The SELECT statement will retrieve all records from the MIT_STUDENTS table if the WHERE condition gets TRUE. At the end of the query, we have used the LIMIT clause as LIMIT 10 to retrieve the first 10 records from the MIT_STUDENTS table by using the SELECT statement.

In this section, we hope you have understood the error raised in the IS NULL condition in the SELECT statement which was used to find non-empty values in the MIT_STUDENTS table. We also used an example and explained it in detail in this sub-topic.

Read: MariaDB Update Statement with Examples

MariaDB Select Where Not Empty Group By

In this MariaDB tutorial, we will learn how to use the MariaDB SELECT statement with the GROUP BY clause to find non-empty values in the query. And which is explained with the help of an illustrated example.

The group by clause in MariaDB divides a result’s rows into categories. The aggregate functions count(), min(), max(), sum(), and avg() are frequently used with the group by function to obtain attributes of groups. For example, the number of elements (count), the total of values (sum), the maximum element (max), the minimum element (min), and the average of elements (avg).

Here is a sample example of the MariaDB SELECT statement with the GROUP BY clause to find a non-empty value in the table by the following query:

EXAMPLE:

SELECT FULL_NAME, EXPIRING_DATE FROM USA_FAZZRO_COMPANY
WHERE FULL_NAME != ' ' 
GROUP BY EXPIRING_DATE;

In this preceding query, the SELECT statement is used to retrieve all records of the FULL_NAME and EXPIRING_DATE columns from the USA_FAZZRO_COMPANY table. In the WHERE condition, the FULL_NAME column is used with the NOT EQUAL operator to find a non-empty value from the USA_FAZZRO_COMPANY table.

And then we grouped them in the EXPIRING_DATE column by using the GROUP BY clause. The SELECT statement will retrieve all records from the USA_FAZZRO_COMPANY table if the WHERE condition gets TRUE.

In this section, we have used the SELECT statement with the GROUP BY clause to find non-empty values in the USA_FAZZRO_COMPANY table. We hope that concept might be cleared for searching for a non-empty value and to explain it better we had used the example above.

Read: MariaDB Check If Rows Exists

MariaDB Select Where Not Empty JSON

In this MariaDB sub-topic, we will learn and understand how to use the SELECT statement with the JSON data type in the table to find non-empty values by the query. And which is explained with the help of an illustrated example.

MariaDB’s JSON data type is a replacement for LONGTEXT, which was designed to work with MySQL’s JSON data type. Because it violates the SQL standard, MariaDB supports the JSON data format as a LONGTEXT instead, and MariaDB’s benchmarks show that efficiency is at least comparable.

Here is a sample example of the MariaDB SELECT statement on the JSON data type to find a non-empty value in the table by the following query:

EXAMPLE:

SELECT * FROM JSON_DEMO
WHERE USER_NAME != '  ';

As we see in the above query, the SELECT statement will retrieve all records from the JSON_DEMO table. In the WHERE condition, the USER_NAME is used with the NOT EQUAL operator to find a non-empty value in the JSON_DEMO table.

The SELECT statement will retrieve all records from the JSON_DEMO table if the WHERE condition gets TRUE.

In this section, we understood how to use the MariaDB SELECT statement with the JSON data type to find non-empty values in the query. For a better understanding of this sub-topic, we have used the example above and explained it in detail.

Read: MariaDB Check Constraint + Examples

MariaDB Select Where Not Empty Like

In this section. we will learn and understand how to use the MariaDB SELECT statement with the LIKE condition to non-empty value in the table by the query. And which is explained with the help of an illustrated example.

The LIKE operator is a logical operator in MariaDB that returns TRUE when any string matches the specific pattern provided with the LIKE operator. In other words, with the help of a like operator, we can test whether the string or expression matches the pattern.

If the string or expression matches with the pattern, then it returns TRUE otherwise FALSE. The pattern is used with the LIKE operator, and this pattern is called wildcards. Two wildcards are used with the like operator in MariaDB.

• Percent(%): It is called a percent wildcard that matches any string with any number of characters.
• Underscore(_): It is called an underscore wildcard that matches any single character.

Here is an illustrated example of the MariaDB SELECT statement with the LIKE condition to find a non-empty value in the table by the following query:

EXAMPLE:

SELECT FULL_NAME, JOINING_DATE FROM USA_FAZZRO_COMPANY
WHERE FULL_NAME !=' ' 
AND FULL_NAME LIKE '%r';

In this preceding query, we retrieve all records of the FULL_NAME and JOINING_DATE columns from the USA_FAZZRO_COMPANY table. In the WHERE condition, the FULL_NAME is used with the NOT EQUAL operator to find a non-empty value in the USA_FAZZRO_COMPANY table.

And the FULL_NAME column is used with the LIKE condition to find the alphabet r at the end of the string in the USA_FAZZRO_COMPANY table.

The SELECT statement is used to retrieve all records from the USA_FAZZRO_COMPANY table if the WHERE condition gets TRUE.

In this section, we will use the MariaDB SELECT statement with the LIKE condition to find a non-empty string in the query. And for better understanding, we have used an example to explain it properly in the above topic.

Read: MariaDB Greatest Function

MariaDB Select Where Not Empty Partition By

In this section, we will learn and understand how to use the MariaDB SELECT statement with the PARTITION BY clause to find non-empty values in the table. And which will be explained with the help of an illustrated example.

To separate table rows into groups, the MariaDB PARTITION BY clause is utilized. It’s useful for doing calculations on single rows of a group using rows from the same group.

• It is always used in conjunction with the OVER() clause.
• Window refers to the partition created by the partition clause.
• This clause only applies to Windows functions. RANK(), LEAD(), LAG(), and so on.
• If this clause in the OVER() clause is omitted, the entire table is treated as a single partition.

Here is a sample example of the MariaDB SELECT statement with the PARTITION BY clause to find a non-empty value in the table by the following query:

EXAMPLE:

SELECT FULL_NAME, MAX(ID) OVER (PARTITION BY FULL_name) 
 AS MAX_BY_NAME FROM USA_FAZZRO_COMPANY
 WHERE FULL_NAME !=' ';

As we see in the above query, the SELECT statement is used to retrieve all records of the FULL_NAME column from the USA_FAZZRO_COMPANY table. In the MAX function, we have used to find max value in the ID column and partitioned them on the FULL_NAME column by using the OVER clause.

To shorter the function_name, we have used the ALIAS clause with AS keyword and given the name as MAX_BY_NAME for the output column. In the WHERE condition, the FULL_NAME column is used with the NOT EQUAL operator to find the non-empty value in the USA_FAZZRO_COMPANY table.

The SELECT statement will retrieve all records from the USA_FAZZRO_COMPANY table if the WHERE condition gets TRUE.

In this section, we have understood and learned how to use the MariaDB SELECT statement with the PARTITION BY clause in the USA_FAZZRO_COMPANY table to find non-empty values by the query. For better understanding, we have used an example and explained it in detail.

Read: MariaDB Median – Complete Tutorial

MariaDB Select Where Not Empty Year

In this section, we will learn and understand how to use the MariaDB YEAR function in the SELECT statement to find empty values in the query. And it’s explained with the help of an illustrated example.

In MariaDB, the YEAR function is used to extract the year value from the expression or column_name in the query. Let’s use an example of the MariaDB SELECT statement with the YEAR function to find an empty value in the table by the following query:

EXAMPLE:

SELECT YEAR(JOINING_DATE),FULL_NAME FROM USA_FAZZRO_COMPANY 
WHERE FULL_NAME != '  ' ;

As we see in the above query, we have used the YEAR function on the JOINING_DATE column to extract the year value from the USA_FAZZRO_COMPANY table. We have retrieved all records of the FULL_NAME column from the USA_FAZZRO_COMPANY table.

In the WHERE condition, the FULL_NAME column is used with the NOT EQUAL operator to find an empty value from the USA_FAZZRO_COMPANY table. The SELECT statement will retrieve all records from the USA_FAZZRO_COMPANY table if the WHERE condition gets TRUE.

In this section, we have used the SELECT statement with the YEAR function to find an empty value in the USA_FAZZRO_COMPANY table. For a better understanding of this sub-topic, we have used an example and explained it in detail.

Also, take a look at some more MariaDB tutorials.

• MariaDB Drop Index + Examples
• MariaDB Date Allow Null
• MariaDB GROUP BY with Example
• MariaDB Unique Key [Useful Guide]
• MariaDB Date Greater Than + Examples
• MariaDB COUNT Function [10 Examples]
• MariaDB ENUM – Helpful Guide

We addressed the MariaDB Select Where Not Empty statement in this MariaDB tutorial, as well as several sample instances connected to it. There are lists of the topic that comes under discussion:

• MariaDB Select Where Not Empty
• MariaDB Select Where Not Null
• MariaDB Select Where Not Empty And Not Null
• MariaDB Select Where Not Empty Error
• MariaDB Select Where Not Empty Group By
• MariaDB Select Where Not Empty JSON
• MariaDB Select Where Not Empty Like
• MariaDB Select Where Not Empty Partition By
• MariaDB Select Where Not Empty Year