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| - | ====== Omnidex SQL Function: CHARACTER_LENGTH ====== | + | ====== Development: Omnidex SQL ====== |
| - | ===== Description ===== | + | |
| + | ===== SQL Functions: CHARACTER_LENGTH ====== | ||
| + | |||
| + | ==== Description ==== | ||
| The CHARACTER_LENGTH function returns the number of characters in a string. The abbreviation, CHAR_LENGTH, is supported as a synonym for CHARACTER_LENGTH. | The CHARACTER_LENGTH function returns the number of characters in a string. The abbreviation, CHAR_LENGTH, is supported as a synonym for CHARACTER_LENGTH. | ||
| - | CHARACTER_LENGTH should not be confused with $DATA_LENGTH and $COLUMN_LENGTH. $DATA_LENGTH returns the number of characters plus the null-terminator for C STRING datatypes. $COLUMN_LENGTH returns the length of the column as declared in the table. | + | CHARACTER_LENGTH should not be confused with $DATA_LENGTH and $COLUMN_LENGTH. $DATA_LENGTH returns the number of characters plus the null-terminator for STRING datatypes. $COLUMN_LENGTH returns the length of the column as declared in the table. |
| This function returns an INTEGER datatype. | This function returns an INTEGER datatype. | ||
| - | ===== Syntax ===== | + | ===== Syntax ==== |
| CHAR[ACTER]_LENGTH ( character_expression ) | CHAR[ACTER]_LENGTH ( character_expression ) | ||
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| Required. Any expression that returns a character-class datatype. Examples of expressions are columns, concatenations of columns, literal strings and functions that return a character datatype. | Required. Any expression that returns a character-class datatype. Examples of expressions are columns, concatenations of columns, literal strings and functions that return a character datatype. | ||
| - | ===== Examples ===== | + | ==== Examples ==== |
| - | ==== Example 1: Column ==== | + | === Example 1: Column === |
| <code> | <code> | ||
| > select name, character_length(name) len from individuals; | > select name, character_length(name) len from individuals; | ||
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| </code> | </code> | ||
| - | ==== Example 2: Character Expression ==== | + | === Example 2: Character Expression === |
| <code> | <code> | ||
| > select gender, name, char_length(gender || name) len from individuals; | > select gender, name, char_length(gender || name) len from individuals; | ||
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| </code> | </code> | ||
| + | ====== Additional Resources ====== | ||
| + | |||
| + | See also: | ||
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