MySQL Functions for Miscellaneous Purposes

Q

Where to find reference information and tutorials on MySQL database functions for Miscellaneous Purposes? I want to know how to use CAST(), SLEEP() and other miscellaneous functions.

✍: FYIcenter.com

A

Here is a collection of reference information and tutorials on MySQL database functions for Miscellaneous Purposes compiled by FYIcenter.com DBA team.

CAST() - Casting Expression to Value

COALESCE() - Finding First Non-NULL Value

CONVERT() - Character Set Conversion

DEFAULT() - Table Column Default Value

EXTRACTVALUE() - Extracting Text Content from XML

GET_LOCK() - Requesting User Defined Lock

GREATEST() - Finding the Greatest/Maximum Value

IF() - Conditional Value Selection

IFNULL() - Replacing NULL Value

INET_ATON() - IP Address String to Number

INET_NTOA() - IP Address Number to String

INET6_ATON() - IPv6 Address String to Number

INET6_NTOA() - IPv6 Address Number to String

IS_FREE_LOCK() - Checking Lock Status

IS_IPV4() - Detecting IPv4 Address

IS_IPV4_COMPAT() - IPv4-Compatible IPv6 Address

IS_IPV4_MAPPED() - IPv4-Mapped IPv6 Address

IS_IPV6() - Detecting IPv6 Address

IS_USED_LOCK() - Checking Lock Owner

ISNULL() - Detecting NULL Value

LEAST() - Finding the Least/Minimum Value

NAME_CONST() - PS Thread ID of Given Connect

NULLIF() - NULL on Equal Values

RELEASE_ALL_LOCKS() - Release All Locks

RELEASE_LOCK() - Release Lock Instance

SLEEP() - Holding Statement Execution

UPDATEXML() - Updating Child Element in XML

VALUES() - Column Value for "ON DUPLICATE KEY UPDATE"

⇒ CAST() - Casting Expression to Value

⇐ VERSION() - Version Number of MySQL Server

⇑⇑ MySQL Function References

2023-12-19, 1024🔥, 0💬

JSON_VALUE() - Converting JSON Value
How to convert a JSON value to a given MySQL data type using the JSON_VALUE() function? JSON_VALUE(json, path RETURNING type on_empty on_error) is a MySQL built-in function that converts a JSON value to a given MySQL data type. The input JSON value can be a member of a parent JSON array or object. F... 2024-11-23, 993🔥, 0💬

CRC32() - Cyclic Redundancy Check 32-Bit
How to calculate the 32-bit CRC (Cyclic Redundancy Check) value using the CRC32() function? CRC32(str) is a MySQL built-in function that calculates the 32-bit CRC (Cyclic Redundancy Check) value of a given character string and returns it as an integer. For example: SELECT CRC32('MySQL'), HEX(CRC32('... 2024-07-15, 941🔥, 0💬

MySQL Functions on System Information
Where to find reference information and tutorials on MySQL database functions on System Information? I want to know how to use DATABASE(), VERSION() and other functions. Here is a collection of reference information and tutorials on MySQL database functions on System Information compiled by FYIcente... 2024-07-15, 933🔥, 0💬

JSON_SCHEMA_VALIDATION_REPORT() - JSON Schema Validation Report
How to generate a validation report of a JSON value against a JSON schema using the JSON_SCHEMA_VALIDATION_REPORT( )function? JSON_SCHEMA_VALIDATION_REPORT( schema,json) is a MySQL built-in function that returns a validation report of a JSON value against a given JSON schema. The report itself is a ... 2024-11-23, 913🔥, 0💬

BENCHMARK() - Repeating Expression Evaluation
How to evaluate an expression repeatedly for benchmark testing using the BENCHMARK() function? BENCHMARK(count, exp) is a MySQL built-in function that evaluates an expression repeatedly for benchmark testing and returns 0. For example: SELECT BENCHMARK(1000000, AES_ENCRYPT('hello','goodbye') );-- +-... 2024-07-17, 876🔥, 2💬

💬 2024-07-17 Iqra Technology: This is a great overview of the `BENCHMARK()` function in MySQL! Your examples clearly illustrate how it can be used to evaluate...

LEAST() - Finding the Least/Minimum Value
How to find the least (minimum) value of a given list of values using the LEAST() function? LEAST(val1, val2, ...) is a MySQL built-in function that returns the least (minimum) value of a given list of values. For example: SELECT LEAST(70, 89, 73, 99, 101, 110, 116, 101, 114); -- +------------------... 2023-12-19, 865🔥, 0💬

JSON_TABLE() - Inline Table with JSON Array
How to create an inline table with a JSON Array using the JSON_TABLE() function? JSON_TABLE(json, path COLUMNS (column_list) AS alias) is a MySQL built-in function that creates an inline table by parsing JSON array members. For example: the following statement creates a 1-column table with string me... 2024-11-23, 835🔥, 0💬

JSON_SCHEMA_VALID() - JSON Schema Validation
How to validate a JSON value against a JSON schema using the JSON_SCHEMA_VALID() function? JSON_SCHEMA_VALID(schema, json) is a MySQL built-in function that validates a JSON value against a given JSON schema. For example: SET @schema = '{ "id": "http://json-schema.org/geo", "$schema": "http://json-s... 2024-11-23, 821🔥, 0💬

SLEEP() - Holding Statement Execution
How to hold the statement execution for some time using the SLEEP() function? SLEEP(sec) is a MySQL built-in function that holds the execution of the current statement for sec seconds. For example: SELECT SYSDATE(), SLEEP(2), SYSDATE(); -- +---------------------+------- ---+---------------------+-- ... 2023-12-19, 776🔥, 0💬

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