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[英]How to insert rows dynamically from a select query to another table in java?
[英]Java code to insert data into a table by retrieving the result from another query
我有 sql 查詢,如果我必須在 sql 命令行或 IDE 中手動運行它,它運行良好。 但是我必須將其轉換為 java 代碼,並且查詢在 java 中不起作用。 Sql查詢-
"INSERT INTO table_1(column1, column2,column3, column4, column5)
SELECT DISTINCT s.computedmetric_name AS metric_name, s.display_name, FALSE
AS is_generated,FALSE AS is_manually_marked_for_deletion, FALSE AS
is_data_marked_for_deletion FROM db_computedmetrics_temp AS s WHERE
s.computedmetric_name IS NOT NULL AND s.display_name IS NOT NULL AND NOT
EXISTS (SELECT 1 FROM db_metrics AS t WHERE t.metric_name =
s.computedmetric_name)"
我正在嘗試使用以下 java 代碼
String sql="Above mentioned sql query directly into this string";
Statement stmt = sqliteDBConnection.createStatement();
stmt.executeUpdate(sql);
但是在運行代碼時,我收到異常說 -
Exception in thread "main" org.sqlite.SQLiteException: [SQLITE_ERROR] SQL error or missing database (no such column: FALSE)
請注意,較早的 sql 是為 postgres DB 編寫的,而 Java 代碼正在連接到 sqllite db。 請幫助我將 sql 轉換為與 java 一起使用。 謝謝!
SQLite 不支持TRUE
和FALSE
作為關鍵字
SQLite 沒有單獨的布爾存儲類。 相反,布爾值存儲為整數 0 (false) 和 1 (true)。
http://www.sqlite.org/datatype3.html
所以你必須將你的查詢更改為這樣的
INSERT INTO table_1(column1, column2,column3, column4, column5)
SELECT DISTINCT s.computedmetric_name AS metric_name, s.display_name, 0
AS is_generated,0 AS is_manually_marked_for_deletion, 0 AS
is_data_marked_for_deletion FROM db_computedmetrics_temp AS s WHERE
s.computedmetric_name IS NOT NULL AND s.display_name IS NOT NULL AND NOT
EXISTS (SELECT 1 FROM db_metrics AS t WHERE t.metric_name =
s.computedmetric_name)
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