INITCAP 函數

將指定字串中每個單字的第一個字母變成大寫。INITCAP 支援 UTF-8 多位元組字元，每個字元最多 4 個位元組。

語法

INITCAP(string)

引數

string

CHAR 字串、VARCHAR 字串或隱含評估為 CHAR 或 VARCHAR 類型的運算式。

傳回類型

VARCHAR

使用須知

INITCAP 函數將字串中每個單字的第一個字母變成大寫，而後續任何字母都變成 (或保持) 小寫。因此，必須了解哪些字元 (除了空白字元) 做為單字分隔符號。單字分隔符號字元是任何非英數字元，包括標點符號、記號及控制字元。以下所有字元都是單字分隔符號：

! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~ 

Tab、新行字元、換頁、換行及歸位也是單字分隔符號。

範例

下列範例會使用 TICKIT 範例資料庫中 CATEGORY 和 USERS 表格中的資料。如需詳細資訊，請參閱 範本資料庫。

若要將 CATDESC 欄中每個單字的首字母變成大寫，請使用下列範例。

SELECT catid, catdesc, INITCAP(catdesc)
FROM category
ORDER BY 1, 2, 3;

+-------+--------------------------------------------+--------------------------------------------+
| catid |                  catdesc                   |                  initcap                   |
+-------+--------------------------------------------+--------------------------------------------+
|     1 | Major League Baseball                      | Major League Baseball                      |
|     2 | National Hockey League                     | National Hockey League                     |
|     3 | National Football League                   | National Football League                   |
|     4 | National Basketball Association            | National Basketball Association            |
|     5 | Major League Soccer                        | Major League Soccer                        |
|     6 | Musical theatre                            | Musical Theatre                            |
|     7 | All non-musical theatre                    | All Non-Musical Theatre                    |
|     8 | All opera and light opera                  | All Opera And Light Opera                  |
|     9 | All rock and pop music concerts            | All Rock And Pop Music Concerts            |
|    10 | All jazz singers and bands                 | All Jazz Singers And Bands                 |
|    11 | All symphony, concerto, and choir concerts | All Symphony, Concerto, And Choir Concerts |
+-------+--------------------------------------------+--------------------------------------------+

若要顯示 INITCAP 函數不保留非單字開頭的大寫字元，請使用下列範例。例如，字串 MLB 會變成 Mlb。

SELECT INITCAP(catname)
FROM category
ORDER BY catname;

+-----------+
|  initcap  |
+-----------+
| Classical |
| Jazz      |
| Mlb       |
| Mls       |
| Musicals  |
| Nba       |
| Nfl       |
| Nhl       |
| Opera     |
| Plays     |
| Pop       |
+-----------+

若要將空格以外的非英數字元顯示為文字分隔符號，請使用下列範例。每個字串中的幾個字母將被大寫。

SELECT email, INITCAP(email)
FROM users
ORDER BY userid DESC LIMIT 5;

+------------------------------------+------------------------------------+
|               email                |              initcap               |
+------------------------------------+------------------------------------+
| [e-mail]     | [e-mail]     |
| [e-mail]               | [e-mail]               |
| [e-mail]                      | [e-mail]                      |
| [e-mail]     | [e-mail]     |
| [e-mail] | [e-mail] |
+------------------------------------+------------------------------------+