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From "Thomas Dudziak (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DDLUTILS-199) Postgress AutoIncrement fails
Date Sun, 20 Apr 2008 22:24:21 GMT

    [ https://issues.apache.org/jira/browse/DDLUTILS-199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12590815#action_12590815
] 

Thomas Dudziak commented on DDLUTILS-199:
-----------------------------------------

The underscore is not a special character - in fact it is usually the only non alphanumeric
character that is allowed in table/column/... names when not in delimited identifier mode.

Could you post the database version, the exact model or even SQL that you have problems with,
and the errors that you're getting ?

Could you also try this SQL:

CREATE SEQUENCE roundtrip_avalue_seq;

CREATE TABLE roundtrip
(
    pk INTEGER NOT NULL,
    avalue INTEGER UNIQUE DEFAULT nextval('roundtrip_avalue_seq'),
    PRIMARY KEY (pk)
);

INSERT INTO roundtrip (pk) VALUES (1);

This works fine for me when executed in SQuirrel SQL 2.6.1. against a PostgreSQL 8.2 database
and the 8.2-506 JDBC driver.

> Postgress AutoIncrement fails
> -----------------------------
>
>                 Key: DDLUTILS-199
>                 URL: https://issues.apache.org/jira/browse/DDLUTILS-199
>             Project: DdlUtils
>          Issue Type: Bug
>          Components: Core - PostgreSql
>    Affects Versions: 1.0
>         Environment: Ubuntu 7.10, PostgreSQL 8.2.6
>            Reporter: Rijk van Haaften
>            Assignee: Thomas Dudziak
>             Fix For: 1.1
>
>   Original Estimate: 0.17h
>  Remaining Estimate: 0.17h
>
> class org.apache.ddlutils.platform.postgresql.PostgreSqlBuilder 
> writeColumnAutoIncrementStmt(Table, Column)
> encloses the parameter of nextval in single quotes. 
> print("UNIQUE DEFAULT nextval('");
> ...
> print("')");
> which in my case generates
> UNIQUE DEFAULT nextval('Entity_id_seq')
> The underscore is a 'special' character, so the string Entity_id_seq needs to be in double
quotes. The fix is simple but tricky: the single quotes MUST remain! My local fix (notice
the escaped double quote \" twice):
> /**
> * {@inheritDoc}
> */
> protected void writeColumnAutoIncrementStmt(Table table, Column column) throws IOException
> {
>     print("UNIQUE DEFAULT nextval('\"");
>     print(getConstraintName(null, table, column.getName(), "seq"));
>     print("\"')");
> }

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