从 .txt 文件读取数据并将其插入到 Oracle SQL DB [PL/SQL, Unix 脚本]

Question

i have an input file: $home/dir/subdir/input.txt

content of input.txt:

123,0000,11111,3,1,X
124,0001,11112,3,1,Y
125,0002,,4,2,Y
129,0003,11114,4,2,X

I have a table where col1, col2, col3 cannot be null:

col1	col2	col3	col4	col5	col6	col7	col8	col9
	123	0000	11111			3	1	X
	124	0001	11112			3	1	Y
	129	0003	11114			4	2	X

How do I insert the contents of input.txt to the table accordingly? using pl/sql and unix scripting

Answer 1

You can use the regexp_substr function.

In the following example, I used the regexp_like function to confirm it was in the given format. Adjust it as you like.
Example:

SELECT regexp_substr(string, '[^,]+', 1, 1) as col2,
       regexp_substr(string, '[^,]+', 1, 2) as col3, 
       regexp_substr(string, '[^,]+', 1, 3) as col4, 
       regexp_substr(string, '[^,]+', 1, 4) as col7,
       regexp_substr(string, '[^,]+', 1, 5) as col8,
       regexp_substr(string, '[^,]+', 1, 6) as col9,  
FROM   table
WHERE  REGEXP_LIKE(string, '[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+,[A-Za-z]+');

Result:

COL1	COL2	COL3	COL4	COL5	COL6	COL7	COL8	COL9
-	123	0000	11111	-	-	3	1	X
-	129	0003	11114	-	-	4	2	X
-	124	0001	11112	-	-	3	1	Y