從字符串中的ID中檢索表中的隨機行

我想從我的表中選擇一個隨機行，並使用ID在我的數組中。從字符串中的ID中檢索表中的隨機行

字符串$ data包含我想用逗號分隔的所有id列表。

$statement = $conn->prepare("SELECT * FROM clients ORDER BY rand() WHERE find_in_set(id,'$data') LIMIT 1");

這是我的查詢，

ID是我的表的字段。

以下是錯誤

An error has occurred exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE find_in_set(id,'0,1') LIMIT 1' at line 1' in

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2013-11-28 Muhammad Umar

質疑以下順序進行評價。「WHERE」=>「GROUP BY」=>「HAVING」=>「ORDER BY」=>「LIMIT」 –

您的查詢是錯誤的。你需要先重寫它。見下圖1

$statement = $conn->prepare("SELECT * FROM clients WHERE find_in_set(id,'$data') ORDER BY rand() LIMIT 1");

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2013-11-28 09:32:29

謝謝 –

order by clause placement在你的查詢中是錯誤的。

$statement = $conn->prepare("SELECT * FROM clients WHERE find_in_set(id,'$data') 
ORDER BY rand() LIMIT 1");

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2013-11-28 09:34:13

嘗試此，ORDER BY應該是後where條件或tablename

SELECT * FROM clients WHERE find_in_set(id,'$data') ORDER BY rand() LIMIT 1

語法：http://dev.mysql.com/doc/refman/5.0/en/select.html

SELECT 
[ALL | DISTINCT | DISTINCTROW ] 
    [HIGH_PRIORITY] 
    [STRAIGHT_JOIN] 
    [SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT] 
    [SQL_CACHE | SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS] 
select_expr [, select_expr ...] 
[FROM table_references 
[WHERE where_condition] 
[GROUP BY {col_name | expr | position} 
    [ASC | DESC], ... [WITH ROLLUP]] 
[HAVING where_condition] 
[ORDER BY {col_name | expr | position} 
    [ASC | DESC], ...] 
[LIMIT {[offset,] row_count | row_count OFFSET offset}] 
[PROCEDURE procedure_name(argument_list)] 
[INTO OUTFILE 'file_name' export_options 
    | INTO DUMPFILE 'file_name' 
    | INTO var_name [, var_name]] 
[FOR UPDATE | LOCK IN SHARE MODE]]

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2013-11-28 09:34:17

從字符串中的ID中檢索表中的隨機行

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