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                # MOVE ## Name MOVE?--?定位一個游標 ## Synopsis ``` MOVE [ _direction_ [ FROM | IN ] ] _cursor_name_ where `_direction_` can be empty or one of: NEXT PRIOR FIRST LAST ABSOLUTE _count_ RELATIVE _count_ _count_ ALL FORWARD FORWARD _count_ FORWARD ALL BACKWARD BACKWARD _count_ BACKWARD ALL ``` ## 描述 `MOVE`在不檢索數據的情況下重新定位一個游標。`MOVE` 的工作類似于`FETCH`命令,但只是重定位游標而不返回行。 `MOVE`命令的參數與`FETCH`命令的參數相同; 請參考[FETCH](#calibre_link-74)命令獲取語法和參數的詳細信息。 ## 輸出 成功完成時,`MOVE`命令將返回一個下面形式的命令標簽 ``` MOVE _count_ ``` `_count_`是一個帶同參數的`FETCH` 命令會返回的行數(可能為零)。 ## 例子 ``` BEGIN WORK; DECLARE liahona CURSOR FOR SELECT * FROM films; -- 忽略開頭5行: MOVE FORWARD 5 IN liahona; MOVE 5 -- Fetch the 6th row from the cursor liahona: FETCH 1 FROM liahona; code | title | did | date_prod | kind | len -------+--------+-----+------------+--------+------- P_303 | 48 Hrs | 103 | 1982-10-22 | Action | 01:37 (1 row) -- 關閉游標liahona并提交事務: CLOSE liahona; COMMIT WORK; ``` ## 兼容性 SQL 標準里沒有`MOVE`語句。 ## 又見 [CLOSE](#calibre_link-69), [DECLARE](#calibre_link-72), [FETCH](#calibre_link-74)
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