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17 sty 2012 · SELECT convert(int, sum(number)/count(number)) as average, date FROM stats WHERE * GROUP BY date or. SELECT CAST(sum(number)/count(number) as INT) as average, date FROM stats WHERE * GROUP BY date
The CAST() function converts a value (of any type) into the specified datatype. Tip: See also the CONVERT() function. Syntax
To override this, use the SIGNED or UNSIGNED cast operator to cast a value to a signed or unsigned 64-bit integer, respectively. mysql> SELECT 1 - 2; -> -1 mysql> SELECT CAST(1 - 2 AS UNSIGNED); -> 18446744073709551615 mysql> SELECT CAST(CAST(1 - 2 AS UNSIGNED) AS SIGNED); -> -1
CAST lets you convert built-in data types or collection-typed values of one type into another built-in data type or collection type. You can cast an unnamed operand (such as a date or the result set of a subquery) or a named collection (such as a varray or a nested table) into a type-compatible data type or named collection.
Use mysql function CAST_TO_BIT. Examples: Mysql: SELECT CAST_TO_BIT (0); -> jdbc driver -> Java: Boolean false; Mysql: SELECT CAST_TO_BIT (1); -> jdbc driver -> Java: Boolean true; Mysql: SELECT CAST_TO_BIT (NULL); -> jdbc driver -> Java: NULL; You also can use "CASE": CAST(IF(col_name = 1, 'true', 'false') AS JSON) may work for some use cases.
To override this, use the SIGNED or UNSIGNED cast operator to cast a value to a signed or unsigned 64-bit integer, respectively. mysql> SELECT 1 - 2;-> -1 mysql> SELECT CAST(1 - 2 AS UNSIGNED);-> 18446744073709551615 mysql> SELECT CAST(CAST(1 - 2 AS UNSIGNED) AS SIGNED);-> -1
19 lut 2018 · If you are running Oracle 12.2, You can specify the DEFAULT return_value ON CONVERSION ERROR clause in CAST. CAST(OVERTIME AS FLOAT DEFAULT 0 ON CONVERSION ERROR) CAST
