This is the legacy 4D documentation web site. Documentations are progressively being moved to developer.4d.com
- 4D SQL Reference
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- Functions
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SQL Functions
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ABS
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ACOS
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ASCII
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ASIN
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ATAN
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ATAN2
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AVG
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BIT_LENGTH
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CAST
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CEILING
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CHAR
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CHAR_LENGTH
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COALESCE
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CONCAT
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CONCATENATE
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COS
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COT
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COUNT
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CURDATE
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CURRENT_DATE
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CURRENT_TIME
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CURRENT_TIMESTAMP
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CURTIME
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DATABASE_PATH
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DATE_TO_CHAR
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DAY
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DAYNAME
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DAYOFMONTH
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DAYOFWEEK
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DAYOFYEAR
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DEGREES
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EXP
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EXTRACT
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FLOOR
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HOUR
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INSERT
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LEFT
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LENGTH
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LOCATE
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LOG
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LOG10
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LOWER
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LTRIM
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MAX
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MILLISECOND
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MIN
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MINUTE
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MOD
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MONTH
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MONTHNAME
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NULLIF
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OCTET_LENGTH
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PI
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POSITION
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POWER
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QUARTER
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RADIANS
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RAND
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REPEAT
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REPLACE
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RIGHT
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ROUND
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RTRIM
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SECOND
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SIGN
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SIN
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SPACE
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SQRT
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SUBSTRING
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SUM
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TAN
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TRANSLATE
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TRIM
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TRUNC
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TRUNCATE
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UPPER
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WEEK
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YEAR
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CAST
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CAST (arithmetic_expression AS sql_data_type_name) |
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The CAST function converts the arithmetic_expression to the sql_data_type_name passed following the AS keyword.
Note: When used to convert an object field into a VARCHAR, a JSON representation of the object is returned.
This example converts the year of the movie into an Integer type:
SELECT Year_of_Movie, Title, Director, Media, Sold_Tickets
FROM MOVIES
WHERE Year_of_Movie >= CAST('1960' AS INT)This example demonstrates converting an object field (Persons.address) into a VARCHAR:
SELECT Persons.name, CAST(Persons.address as VARCHAR)
FROM Persons
4D SQL engine implementation
Blog: Read 4D object fields with SQL Engine
Product: 4D
Theme: Functions
4D SQL Reference ( 4D v20 R7)
