Question

我正在尝试使用SELECT和值创建INSERT INTO，但没有效果。

表来源：

CREATE TABLE "MICV_PRE"."TS$SEQUENCES"
  (
    "ID_NODE"     NUMBER DEFAULT 1 NOT NULL ENABLE,
    "ID_TASK"     NUMBER DEFAULT 1 NOT NULL ENABLE,
    "ID_DOCUMENT" NUMBER DEFAULT 1 NOT NULL ENABLE,
    "ID_WORD"     NUMBER DEFAULT 1 NOT NULL ENABLE,
    "ID_TEAM"     NUMBER DEFAULT '1' NOT NULL ENABLE)

表修改：

  CREATE TABLE TS$SEQUENCES_NEW(
     "ID_CODE" VARCHAR(255 CHAR) NOT NULL ENABLE,
     "CODE_SUBSEQUENCE" VARCHAR2(255 CHAR) NOT NULL ENABLE,
     "VALUE"  NUMBER(10,0) NOT NULL ENABLE
  );

表格来源：

id_task | id_node | id_word 
  10    |    20   | 30

要修改的表：

 id_code  | code_subsequence | value 
"id_task" | "empty"          | 10 
"id_node" | "empty"          | 20 
"id_word" | "empty"          | 30

Answer 1

所以，你试过的SQL是：

SQL> INSERT INTO TS$SEQUENCES_NEW
  2  SELECT TS$SEQUENCES.ID_TASK AS "VALUE", 'ID_TASK' AS "ID_CODE", 'VACIO' AS "CODE_SUBSEQUENCE"
  3  FROM TS$SEQUENCES
  4  /
                                                                *
ERROR at line 2:
ORA-01722: invalid number


SQL>

此操作失败，因为查询投影中的数据类型与表中列的顺序不匹配。因此，要么更改SELECT语句，要么在INSERT子句中定义顺序：

SQL> INSERT INTO TS$SEQUENCES_NEW  ("VALUE", "ID_CODE","CODE_SUBSEQUENCE" )
  2  SELECT TS$SEQUENCES.ID_TASK AS "VALUE", 'ID_TASK' AS "ID_CODE", 'VACIO' AS "CODE_SUBSEQUENCE"
  3  FROM TS$SEQUENCES
  4  /

1 row created.

SQL>

Answer 2

试试这个：

INSERT INTO TS$SEQUENCES_NEW (VALUE, ID_CODE, CODE_SUBSEQUENCE)
SELECT TS$SEQUENCES.ID_TASK AS "VALUE", 'ID_TASK' AS "ID_CODE", 'VACIO' AS "CODE_SUBSEQUENCE" 
FROM TS$SEQUENCES;

即时尝试使用select和value进行插入

2 个答案: