//SQL Server 、 MS AccessSELECT ProductName, UnitPrice* (UnitsInStock + ISNULL(UnitsOnOrder, 0)) FROM Products//MySQLSELECT ProductName, UnitPrice* (UnitsInStock + IFNULL(UnitsOnOrder, 0)) FROM Products 或者我们可以使用 COALESCE() 函数,如下所示: SELECT ProductName, UnitPrice* (UnitsInSt...
toSqlString() Functions Mostly MYSQL functions, but there are some special ones. Comparison (special) VALUE(ARG) - any value you want to exist in the query. (special) NULL() - If you need a dummy placeholder value in the query. (special) ONE() - Just "1 as one" to simplify ...
Assign empty string '' if datetime is null Assign EXEC output to Variable Assigning NULL value to column name using Case Statement of where is SQL SERVER 2008 atomic if not exists() and insert or update Attempt to fetch logical page (1:155534) in database 7 failed. It belongs to allocati...
MariaDB and MySQL both support SQL to query the database and the tables. Hence, the coding standards are SQL-based standards in MariaDB and MySQL. As MariaDB is forked out of MySQL, you would find that MariaDB queries in almost all cases are exactly similar to MySQL queries. Let us go...
COUNT of table = SUM of Number of Records per table. You can't build calculations on top of a table's Count field. Count is aggregate-only.Note: You might see the Number of Records field in the Data pane if you open a pre-2020.2 workbook that used Number of Records in a view....
○ IFNULL: Returns the first value of two values that is not NULL. Syntax: IFNULL (IFNULL (Custname, CustID), 'Invalid value') ○ GET_INITIAL: Returns the initial value for a column, depending on the metadata of the column. Syntax: GET_INITIAL (Due_amount) ○ BW_GEO_FEATURE_ID: ...
FOR EACH ROW SET NEW.dateAdded = IFNULL(NEW.dateAdded, NOW()); With this approach, you can enjoy the benefits of both worlds. If you provide a value for your date column, it will be accepted. Otherwise, it will default to the current time. Although it is not as clean as using DE...
Array's IN SQL SERVER? ASCII values for extended characters Assign empty string '' if datetime is null Assign EXEC output to Variable Assigning NULL value to column name using Case Statement of where is SQL SERVER 2008 atomic if not exists() and insert or update Attempt to fetch logical p...
COUNT of table = SUM of Number of Records per table. You can't build calculations on top of a table's Count field. Count is aggregate-only. Note: You might see the Number of Records field in the Data pane if you open a pre-2020.2 workbook that used Number of Records in a view. ...
○ IFNULL: Returns the first value of two values that is not NULL. Syntax: IFNULL (IFNULL (Custname, CustID), 'Invalid value') ○ GET_INITIAL: Returns the initial value for a column, depending on the metadata of the column. Syntax: GET_INITIAL (Due_amount) ○ BW_GEO_FEATURE_ID: ...