[英]PreparedStatement IF EXISTS throws: org.postgresql.util.PSQLException: The column index is out of range: 1, number of columns: 0
[英]org.postgresql.util.PSQLException: The column index is out of range: 2, number of columns: 1
我有以下代碼:
String insert = "INSERT INTO " + tableName +
"(" + COLUMNS.TILE_ID + "," + COLUMNS.TILE_DATA + "," +
COLUMNS.TILE_LEVEL + "," + COLUMNS.TILE_COLUMN +
"," + COLUMNS.TILE_ROW +
"," + COLUMNS.TILE_IMAGE_FORMAT + "," + COLUMNS.TILE_SOURCE +
")";
String values = id + ",?" + "," +
tile.getLevel() + "," + tile.computeColumn() + "," +
tile.computeRow() + ",\'" + tile.getFileType().toUpperCase() +
"\'," + "\'" +
tile.getSource() + "\');";
String query = insert + " VALUES (" + values;
System.out.println(query);
PreparedStatement statement = conn.prepareStatement(query);
statement.setBytes(2, tile.getData());
return this.conn.createStatement().executeUpdate(query);
查詢值:
插入第1級(TILE_ID,TILE_DATA,TILE_LEVEL,TILE_COLUMN,TILE_ROW,TILE_IMAGE_FORMAT,TILE_SOURCE)值(0,?,1,0,0,'JPG','null');
我得到的錯誤 :
org.postgresql.util.PSQLException:列索引超出范圍:2,列數:1。
我的桌子:
tile_id bigint NOT NULL,
tile_data bytea,
tile_level smallint,
tile_row integer,
tile_column integer,
tile_image_format image_format,
tile_source character varying(30),
CONSTRAINT level10_pkey PRIMARY KEY (tile_id)
有任何想法嗎?
您尚未發布堆棧跟蹤信息,但您的錯誤似乎是從此出現的:
statement.setBytes(2, tile.getData());
這是因為您只有一個參數要綁定到:
INSERT INTO level1 (TILE_ID,TILE_DATA,TILE_LEVEL,TILE_COLUMN,TILE_ROW,TILE_IMAGE_FORMAT,TILE_SOURCE) VALUES (0,?,1,0,0,'JPG','null');
參數不在值列表中的位置2的事實並不重要。 實際上,它是第一個重要的占位符。 所以你的代碼應該是
statement.setBytes(1, tile.getData());
多虧了e4c5的回答,我將代碼固定如下:
String insert = "INSERT INTO " + tableName +
"(" + COLUMNS.TILE_ID + "," + COLUMNS.TILE_DATA + "," +
COLUMNS.TILE_LEVEL + "," + COLUMNS.TILE_COLUMN +
"," + COLUMNS.TILE_ROW +
"," + COLUMNS.TILE_IMAGE_FORMAT + "," + COLUMNS.TILE_SOURCE +
")";
String values = id + ",?" + "," +
tile.getLevel() + "," + tile.computeColumn() + "," +
tile.computeRow() + ",\'" + tile.getFileType().toUpperCase() +
"\'," + "\'" +
tile.getSource() + "\');";
String query = insert + " VALUES (" + values;
PreparedStatement statement = conn.prepareStatement(query);
statement.setBytes(1, tile.getData());
int result = statement.executeUpdate();
statement.close();
return result;
參數不在值列表中的位置2的事實並不重要。 實際上,它是第一個重要的占位符。
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