4D v16

COUNT

Home

4D SQL Reference
- Functions
- - SQL Functions
  - ABS
  - ACOS
  - ASCII
  - ASIN
  - ATAN
  - ATAN2
  - AVG
  - BIT_LENGTH
  - CAST
  - CEILING
  - CHAR
  - CHAR_LENGTH
  - COALESCE
  - CONCAT
  - CONCATENATE
  - COS
  - COT
  - COUNT
  - CURDATE
  - CURRENT_DATE
  - CURRENT_TIME
  - CURRENT_TIMESTAMP
  - CURTIME
  - DATABASE_PATH
  - DATE_TO_CHAR
  - DAY
  - DAYNAME
  - DAYOFMONTH
  - DAYOFWEEK
  - DAYOFYEAR
  - DEGREES
  - EXP
  - EXTRACT
  - FLOOR
  - HOUR
  - INSERT
  - LEFT
  - LENGTH
  - LOCATE
  - LOG
  - LOG10
  - LOWER
  - LTRIM
  - MAX
  - MILLISECOND
  - MIN
  - MINUTE
  - MOD
  - MONTH
  - MONTHNAME
  - NULLIF
  - OCTET_LENGTH
  - PI
  - POSITION
  - POWER
  - QUARTER
  - RADIANS
  - RAND
  - REPEAT
  - REPLACE
  - RIGHT
  - ROUND
  - RTRIM
  - SECOND
  - SIGN
  - SIN
  - SPACE
  - SQRT
  - SUBSTRING
  - SUM
  - TAN
  - TRANSLATE
  - TRIM
  - TRUNC
  - TRUNCATE
  - UPPER
  - WEEK
  - YEAR

Home

4D v16

4D SQL Reference

Functions

COUNT



	Command COUNTCOUNT ({ [ [ALL \|DISTINCT] arithmetic_expression] \|* } )

Description

The COUNT function returns the number of non-null values in the arithmetic_expression. The optional ALL and DISTINCT keywords are used to respectively retain or eliminate any duplicate values.

If you pass the * instead, the function returns the total number of records in the arithmetic_expression, including duplicate and NULL values.

Example

This example returns the number of movies from the MOVIES table:

SELECT COUNT(*) 
FROM MOVIES