LibreOfficeDev 25.2 Help
This section contains descriptions of the Text functions.
To include a text string in a formula, place the text string between two double quotation marks (") and Calc takes the characters in the string without attempting to interpret them. For example, the formula ="Hello world!" displays the text string Hello world! in the cell, with no surrounding double quotation marks.
The more complex formula =CONCATENATE("Life is really simple, "; "but we insist on making it complicated "; "(Confucius).") concatenates three individual strings in double quotation marks, outputting Life is really simple, but we insist on making it complicated (Confucius).
To place a literal double quotation mark within a string inside a formula, two methods can be used:
You can "escape" the double quotation mark with an additional double quotation mark, and Calc treats the escaped double quotation mark as a literal value. For example, the formula ="My name is ""John Doe""." outputs the string My name is "John Doe". Another simple example is the formula =UNICODE("""") which returns 34, the decimal value of the Unicode quotation mark character (U+0022) — here the first and fourth double quotation marks indicate the beginning and end of the string, while the second double quotation mark escapes the third.
You can use the CHAR function or the UNICHAR function to insert a double quotation mark. For example, the formula =UNICHAR(34) & "The Catcher in the Rye" & UNICHAR(34) & " is a famous book by J. D. Salinger." displays the string "The Catcher in the Rye" is a famous book by J. D. Salinger.
Be aware that Calc's AutoCorrect function may modify double quotation marks. AutoCorrect should not change the double quotation marks within formula cells but may change those used in non-formula cells containing text. For example, if you copy a string that is surrounded by some other form of typographical double quotation marks, such as the left double quotation mark (U+201C) and the right double quotation mark (U+201D), and then paste into a formula cell, an error may result. Open the Double Quotes area of the dialog to set the characters used to automatically correct the start and end typographical double quotation marks. Uncheck the toggle button to disable the feature.
Cells with the empty string ("") are not equivalent to blank cells. When searching or calculating with text, the empty string "" is the text with length zero.
For example, when the formula in A1 returns the empty string "", the following applies:
=ISBLANK(A1) returns FALSE. The cell is not blank.
=ISFORMULA(A1) returns TRUE. The cell is a formula.
=ISLOGICAL(A1) returns FALSE. Not a logical value.
=ISNONTEXT(A1) returns FALSE. The cell has the empty string.
=ISNUMBER(A1) returns FALSE. Not a number.
=ISTEXT(A1) returns TRUE. The cell has the empty string, calculated by a formula.
=LEN(A1) returns 0. The length of the empty string is 0.
傳回雙位元字元集文字的第一個字元。
LEFTB("Text" [; Number_bytes])
Text 是要傳回初始部份字串的文字。
Number (選擇性) 指定要 LEFTB 擷取的字元數,以位元為單位。若未定義此參數,則傳回一個字元。
=LEFTB("中国";1) returns " " (1 byte is only half a DBCS character and a space character is returned instead).
=LEFTB("中国";2) returns "中" (2 bytes constitute one complete DBCS character).
=LEFTB("中国";3) returns "中 " (3 bytes constitute one DBCS character and a half; the last character returned is therefore a space character).
=LEFTB("中国";4) returns "中国" (4 bytes constitute two complete DBCS characters).
=LEFTB("office";3) returns "off" (3 non-DBCS characters each consisting of 1 byte).
在雙位元字元集的語言,傳回用來表達文字字串內的字元的位元數。
LEN("Text")
Text 是要測定長度的文字。
LENB("中") 傳回 2 (一個雙位元字元集字元由兩位元構成)。
LENB("台灣") 傳回 4 (兩個雙位元字元集字元,各由兩位元構成)。
LENB("office") 傳回 6 (六個非雙位元字元集字元,每個一位元)。
=LENB("Good Afternoon") 傳回 14。
=LENB(12345.67) 傳回 8。
傳回文字內的文字字串。參數可指定字元的起始位置和數量。
MID("Text"; Start; Number)
Text 是含有要擷取字元的文字。
Start 是要擷取的第一個字元在 Text 中的位置。
Number 指定擷取文字的字元數。
=MID("office";2;2) 傳回 ff。
傳回雙位元組字元集文字內的文字字串。參數指定字元的起始位置和數量。
MIDB("Text"; Start; Number_bytes)
Text 是含有要擷取字元的文字。
Start 是要擷取的第一個字元在 Text 中的位置。
Number_bytes 指定 MIDB 從 Text 傳回的文字字元數量 (以位元為單位)。
=MIDB("中国";1;0) returns "" (0 bytes is always an empty string).
=MIDB("中国";1;1) returns " " (1 byte is only half a DBCS character and therefore the result is a space character).
=MIDB("中国";1;2) returns "中" (2 bytes constitute one complete DBCS character).
=MIDB("中国";1;3) returns "中 " (3 bytes constitute one and a half DBCS character; the last byte results in a space character).
=MIDB("中国";1;4) returns "中国" (4 bytes constitute two complete DBCS characters).
=MIDB("中国";2;1) returns " " (byte position 2 is not at the beginning of a character in a DBCS string; 1 space character is returned).
=MIDB("中国";2;2) returns " " (byte position 2 points to the last half of the first character in the DBCS string; the 2 bytes asked for therefore constitutes the last half of the first character and the first half of the second character in the string; 2 space characters are therefore returned).
=MIDB("中国";2;3) returns " 国" (byte position 2 is not at the beginning of a character in a DBCS string; a space character is returned for byte position 2).
=MIDB("中国";3;1) returns " " (byte position 3 is at the beginning of a character in a DBCS string, but 1 byte is only half a DBCS character and a space character is therefore returned instead).
=MIDB("中国";3;2) returns "国" (byte position 3 is at the beginning of a character in a DBCS string, and 2 bytes constitute one DBCS character).
=MIDB("office";2;3) returns "ffi" (byte position 2 is at the beginning of a character in a non-DBCS string, and 3 bytes of a non-DBCS string constitute 3 characters).
傳回雙位元字元集 (DBCS) 文字的最後幾個字元。
RIGHTB("Text" [; Number_bytes])
Text 是指要傳回右側部分字串的文字。
Number_bytes (optional) specifies the number of characters you want RIGHTB to extract, based on bytes. If this parameter is not defined, one byte is returned.
RIGHTB("台灣";1) returns " " (一位元只是一個雙位元字元集字元的一半,因此只傳回一個空白字元)。
RIGHTB("台灣";2) returns "灣" (兩位元構成一個完整的雙位元組字元集的字元)。
RIGHTB("台灣";3) returns " 灣" (三位元構成半個加一個雙位元組字元集的字元;因此針對那半個傳回空白字元)。
RIGHTB("台灣";4) 傳回 "台灣" (四位元構成兩個完整的雙位元組字元集的字元)。
RIGHTB("office";3) 傳回 "ice" (三個非雙位元字元集字元,每個一位元)。