The TO_TIMESTAMP function is used to convert a string representation of a timestamp into a timestamp data type. It’s particularly useful when you have timestamp values stored as strings and you want to convert them into actual timestamp values for further manipulation or comparison. The syntax of the TO_TIMESTAMP function is as follows: TO_TIMESTAMP(string, format)…
The TO_NUMBER function is used to convert a string representation of a number into a numeric data type. It’s particularly useful when you have numeric values stored as strings and you want to convert them into actual numeric values for arithmetic operations or comparisons. The syntax of the TO_NUMBER function is as follows: TO_NUMBER(string, format)…
In PostgreSQL, the TO_DATE function is used to convert a string representation of a date into a date data type. It’s particularly useful when you have date values stored as strings and you want to convert them into actual date values for further manipulation or comparison. The syntax of the TO_DATE function is as follows:…
In PostgreSQL, the TO_CHAR function is used to convert a value, such as a date, time, or number, to a string with a specified format. This function is particularly useful when you need to format the output of date, time, or numeric data types according to a specific pattern. The syntax of the TO_CHAR function…
The IS NULL operator is used to check if a value is NULL. It’s used in SQL queries to filter rows where a specific column has a NULL value. The syntax for using the IS NULL operator is as follows: SELECT columns FROM table_name WHERE column_name IS NULL; Here’s an example of using the IS…
In PostgreSQL, the not equal to operator (<> or !=) is a comparison operator used to check if two values are not equal. It is used to filter rows where a specified condition is not met. The syntax for using the not equal to operator is as follows: SELECT columns FROM table_name WHERE column_name <>…
The equal operator (=) is a comparison operator used to check if two values are equal. It’s widely used in various contexts, including WHERE clauses to filter rows based on equality conditions and in joins to combine rows with matching values. The syntax for using the equals operator is as follows: SELECT columns FROM table_name…
The less-than operator (<) is a comparison operator used to check if one value is less than another value. It’s commonly used in WHERE clauses to filter rows based on a specific condition involving numerical or string values. The syntax for using the less-than operator is as follows: SELECT columns FROM table_name WHERE column_name <…
The greater-than operator (>) is a comparison operator in postgresql used to check if one value is greater than another value. It’s often used in WHERE clauses to filter rows based on a specific condition involving numerical or string values. The syntax for using the greater-than operator is as follows: SELECT columns FROM table_name WHERE…
The OR operator is a logical operator used to combine multiple conditions in a WHERE clause or other parts of a query. It’s used to ensure that at least one of the specified conditions is true for a particular row to be included in the query result. The syntax for using the OR operator is…