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Parsing SQL DDl

1
In the program I am trying to write, I need to extract table names, attribute names, data types from a text file which is actually a SQL DDL.The text file is something like this
Expand|Select|Wrap|Line Numbers
  1. CREATE TABLE SYSTEM.AQ$_INTERNET_AGENT (
  2. AGENT_NAME VARCHAR2(30) NOT NULL,
  3. PROTOCOL NUMBER(0) NOT NULL,
  4. SPARE1 VARCHAR2(128),
  5. PRIMARY KEY (AGENT_NAME)
  6. );
  7. CREATE TABLE SYSTEM.AQ$_INTERNET_AGENT_PRIVS (
  8. AGENT_NAME VARCHAR2(30) NOT NULL,
  9. DB_USERNAME VARCHAR2(30) NOT NULL
  10. );
Is there an easy way to extract table names and attribute names from such a text file?
Thanks.
Aug 15 '10 #1
2 4100
Alex Papadimoulis
26 Expert
There is no easy way to do this.

Based on VARCHAR2 in your code, it looks like you're using Oracle, and their CREATE TABLE statement is a complete beast.

In order for you to get table names, column names, etc., you would first need to write a parser. There are some great tools avaiable for this (GOLD Parsing System comes to mind), but it's still a ton of work.
Aug 15 '10 #2
damaha
1
I think this article is what you are looking for:
http://www.dpriver.com/blog/list-of-...ddl-statement/

It illustrates how to analyze create table statement, extract table name, attribute names, data types, fetch Primary Key, Foreign Key, Unique Columns.
Aug 18 '10 #3

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