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dev:sql:functions:data_length [2010/07/28 02:46] els |
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| ====== Omnidex SQL Function: $DATA_LENGTH ====== | ====== Omnidex SQL Function: $DATA_LENGTH ====== | ||
| ===== Description ===== | ===== Description ===== | ||
| - | The $DATA_LENGTH function returns the number of characters in a column, plus a terminating null for C STRING datatypes. The $DATA_LENGTH function does not trim trailing spaces, unlike the CHAR_LENGTH function. | + | The $DATA_LENGTH function returns the number of characters in a column, plus a terminating null for STRING datatypes. The $DATA_LENGTH function does not trim trailing spaces, unlike the CHAR_LENGTH function. |
| $DATA_LENGTH should not be confused with CHARACTER_LENGTH and $COLUMN_LENGTH. CHARACTER_LENGTH returns the number of characters in a string, trimmed of trailing spaces. $COLUMN_LENGTH returns the length of the column as declared in the table. | $DATA_LENGTH should not be confused with CHARACTER_LENGTH and $COLUMN_LENGTH. CHARACTER_LENGTH returns the number of characters in a string, trimmed of trailing spaces. $COLUMN_LENGTH returns the length of the column as declared in the table. | ||