UWECProgrammer/ConsolidatedMentionResolutionBenchmark

sentence stringlengths 1 1.38k	label stringclasses 3 values
Thanks to that we can easily create statements that are not known at compile time.	o
URL_http://www.querydsl.com/ [Querydsl] and URL_http://www.jooq.org [jOOQ] are two popular choices.	p
Note: I work for the company behind Querydsl.	o
Which one do you use?	o
:).	o
JOOQ is maybe a better choice for hardcore SQL development, but Querydsl has a simpler API and supports also other backends (JPA, JDO, Lucene, Mongodb etc.	p
); I am also in the company behind Querydsl.	o
We use Querydsl SQL in a few of our in house projects.	o
I have no personal experience of jooq but I have heard that it is quite ok.	o
I do hardcore SQL development.	o
I've used both JOOQ and QueryDSL.	o
Both are quite good but I prefer the latter.	p
The code and project management is more mature.	o
The problem with QueryDsl is that you can't use it as a pure query generator as it does not give you the generated query itself.	o
It will generate the query and execute it for you too.	o
You can't get one without another.	o
@abhinav-sarkar Querydsl supports that, just not as directly as JOOQ.	o
@TimoWestkmper can you point me to the methods to do that?	o
I went through the javadocs and the code but couldn't find anything.	o
You can for example describe the query as a subquery and then serialize it via the SQLSerializer URL_http://www.querydsl.com/static/querydsl/2.9.0/apidocs/com/my sema/query/sql/SQLSerializer.html#serialize%28com.mysema.query.QueryMetadata,% 20boolean%29 If you want a more convenient way to get the SQL String and bindings for a Querydsl SQL query, just create a ticket for it and provide a suggestion how it should/could look like.	o
Querydsl and jOOQ seem to be the most popular and mature choices however there's one thing to be aware of: Both rely on the concept of code generation, where meta classes are generated for database tables and fields.	p
This facilitates a nice, clean DSL but it faces a problem when trying to create queries for databases that are only known at runtime, like in the OP's example above.	p
While jOOQ supports a String based approached there are some quirks.	o
The documentation of Querydsl doesn't mention whether it's possible to not use code generation.	o
Please correct me if I'm wrong.	n
URL_https://github.com/fuzzylollipop/sqlck [SQL-Construction-Kit] is a very flexilble, no dependency framework.	p
Development recently moved from code.google.com to github.	o
It is also available from Maven Central Repository via Sonatype.	o
It's a pity they support only mssql, oracle and sql99.	n
No mysql, firebird etc.	o
Also no documentation visible...	o
SQL99 is a generic implementation that will should work with any database.	o
If you add support for specific databases, and sent a pull request, I can guarantee it will get into the mainline code base.	o
Thanks.	o
Can you make some examples, please?	o
Don't want to dig into the code just to find out how it works at all.	p
about SQL99: I could tell you one thousand reasons why that be true.	o
And two thousand reasons, why it Take a simple select 1, which also comes in at least these flavours: select 1 from dual, select 1 from sysibm.dual, select 1 from sysibm.sysdummy1, select 1 from information_schema.system_users... Oh don't get me started :-).	p
I can recommend URL_http://www.jooq.org [jOOQ] .	p
It provides a lot of great features, also a intuitive DSL for SQL and a extremly customable reverse- engineering approach.	p
jOOQ effectively combines complex SQL, typesafety, source code generation, active records, stored procedures, advanced data types, and Java in a fluent, intuitive DSL.	n
Do you use it?	o
How do you find it?	o
I use it to generate custom source code from DDL.	o
It's working great!.	p
Hibernate Criteria API (not plain SQL though, but very powerful and in active development): CODESNIPPET_JAVA1 .	p
The problem is that it doesn't map to SQL as I understand, right?	o
this doesn't generate SQL and is a nightmare to debug when it doesn't follow the rule of least astonishment ( doesn't work as expected ).	o
It does generate SQL (at the end) and it surprises no one.	o
Benefit -- it is portable across databases.	p
+1 Upvoted again to level up.	p
I don't know why this was downvoted.	n
After all, it's become the standard way of doing this with JPA, even if it's a bit verbose...	n
What is the level of query complexity that you achieved to reach with the JPA Criteria API, without making the query utterly unreadable?	o
Do you have an example of a nested select in an IN / EXISTS clause, or of a self-join using aliases for the Sale entity, etc?	o
I'm curious.	o
Comments do not give much space to provide the examples, but you're welcome to review them at URL_http://docs.jboss.org/hibernate/core/3.5/reference/en/html/querycriteria.html .	p
URL_http://db.apache.org/ddlutils/ [ddlutils] is my best choice: URL_http://db .apache.org/ddlutils/api/org/apache/ddlutils/platform/SqlBuilder.html [http:// db.apache.org/ddlutils/api/org/apache/ddlutils/platform/SqlBuilder.html] here is create example(groovy): CODESNIPPET_JAVA1 .	p
SQL parser library for Java.	o
Is there a good open-source Java library for parsing SQL statements?	o
If possible, it should be customizable or flexible enough to also be able to parse (or at least ignore) vendor-specific syntax (such as Oracle tablespace definitions or MySQL's LIMIT clause).	p
If not, strict adherence to the SQL standard is also fine.	p
I need this for two things: providing an SQL interface to a non-SQL database (mapping to internal API calls) rewriting SQL before it goes to the actual database (e.g.	o
Oracle) .	o
URL_http://jparsec.codehaus.org .	o
how is this question not constructive?	o
what's wrong with you, Stackoverflow?	o
URL_http://www.antlr3.org/grammar/list.html [ANTLR] has an ANSI SQL grammar available.	o
You can use that to create your own parser.	o
Why use ANTLR when you can implement your own parser generator?	o
Why generate your own parser generator when you can use ANTLR?	o
Any links to how one can use Antlr SQL Grammar to parse these queries?	o
I looked at the grammar of some PL/SQL Parsers as well as Lexers and Parsers but was unable to fathom how to use one.	p
Would appreciate any links.	p
You feed the grammar to ANTLR, which spits out the lexer/parser classes that you'll then compile and run.	o
The best source I can think of is the ANTLR reference: URL_http://www.amazon.com/Definitive-Antlr-Reference-Domain-Specific - Programmers/dp/0978739256/ref=sr_1_1?ie=UTF8&qid=1327847925&sr=8-1.	p
The link [ URL_http://www.antlr.org/grammar/list](http://www.antlr.org/grammar/list ) is broken.	n
Does anyone know where the sql grammar is located?	o
We're up to ANTLR 4 now.	o
Perhaps the old grammars don't run on the new version.	o
URL_http://www.antlr3.org/grammar/list.html .	o
URL_http://jsqlparser.sourceforge.net/ [JSqlParser] .	o
If you need a parser there should be a parser in the code base of URL_http://db.apache.org/derby/ [Apache-Derby] .	o
with vendor-specific SQL** You may want to look at the URL_http://java.sun.com/javase/6/docs/api/java/sql /Connection.html#nativeSQL%28java.lang.String%29 [.native()] method on the jdbc Connection object which you can pass it vendor neutral queries that will get postprocessed into vendor specific queries.	o
That native() method looks interesting.	p
Are there any examples as to how it can be used?	o
What kind of conversions are possible there?	o
URL_http://www.sqlparser.com/sql-parser-java.php [General-SQL-Parser-for-Java] is not open source, but is exactly what you are looking after.	n
The best sql parser for Java +1.	p
Try URL_http://zql.sourceforge.net/ [Zql] .	o
zql is good for basic queries but when you try to parse a query that contains join statement, it blows up.	n
so i don't suggest it.	o
Hibernate uses ANTLR for sql and hql parsing.	o
JSqlParser is also a good option.although it has some bugs(or some features not implemented) while parsing oracle pl/sql.see its forum for detail.	p
so if you're parsing oracle pl/sql, ANTLR is recommended.	p
btw, anltr is under BSD.	o
What you want to do with the parsed SQL?	o
I can recommend a few Java implementation of Lex/Yacc ( URL_http://byaccj.sourceforge.net/ [BYACC/J] , URL_http://www2.cs.tum.edu/projects/cup/ [Java-Cup] ) that you can use an existing SQL grammar with.	p
If you want to actually do something with the resulting parsed grammar, I might suggest looking at URL_http://db.apache.org/derby/ [Derby] , an open source SQL database written in Java.	p
Is the SQL parser used in Derby available as an independent JAR ?	o

Thanks to that we can easily create statements that are not known at compile time.

o

URL_http://www.querydsl.com/ [Querydsl] and URL_http://www.jooq.org [jOOQ] are two popular choices.

p

Note: I work for the company behind Querydsl.

o

Which one do you use?

o

:).

o

JOOQ is maybe a better choice for hardcore SQL development, but Querydsl has a simpler API and supports also other backends (JPA, JDO, Lucene, Mongodb etc.

p

); I am also in the company behind Querydsl.

o

We use Querydsl SQL in a few of our in house projects.

o

I have no personal experience of jooq but I have heard that it is quite ok.

o

I do hardcore SQL development.

o

I've used both JOOQ and QueryDSL.

o

Both are quite good but I prefer the latter.

p

The code and project management is more mature.

o

The problem with QueryDsl is that you can't use it as a pure query generator as it does not give you the generated query itself.

o

It will generate the query and execute it for you too.

o

You can't get one without another.

o

@abhinav-sarkar Querydsl supports that, just not as directly as JOOQ.

o

@TimoWestkmper can you point me to the methods to do that?

o

I went through the javadocs and the code but couldn't find anything.

o

You can for example describe the query as a subquery and then serialize it via the SQLSerializer URL_http://www.querydsl.com/static/querydsl/2.9.0/apidocs/com/my sema/query/sql/SQLSerializer.html#serialize%28com.mysema.query.QueryMetadata,% 20boolean%29 If you want a more convenient way to get the SQL String and bindings for a Querydsl SQL query, just create a ticket for it and provide a suggestion how it should/could look like.

o

Querydsl and jOOQ seem to be the most popular and mature choices however there's one thing to be aware of: Both rely on the concept of code generation, where meta classes are generated for database tables and fields.

p

This facilitates a nice, clean DSL but it faces a problem when trying to create queries for databases that are only known at runtime, like in the OP's example above.

p

While jOOQ supports a String based approached there are some quirks.

o

The documentation of Querydsl doesn't mention whether it's possible to not use code generation.

o

Please correct me if I'm wrong.

n

URL_https://github.com/fuzzylollipop/sqlck [SQL-Construction-Kit] is a very flexilble, no dependency framework.

p

Development recently moved from code.google.com to github.

o

It is also available from Maven Central Repository via Sonatype.

o

It's a pity they support only mssql, oracle and sql99.

n

No mysql, firebird etc.

o

Also no documentation visible...

o

SQL99 is a generic implementation that will should work with any database.

o

If you add support for specific databases, and sent a pull request, I can guarantee it will get into the mainline code base.

o

Thanks.

o

Can you make some examples, please?

o

Don't want to dig into the code just to find out how it works at all.

p

about SQL99: I could tell you one thousand reasons why that be true.

o

And two thousand reasons, why it Take a simple select 1, which also comes in at least these flavours: select 1 from dual, select 1 from sysibm.dual, select 1 from sysibm.sysdummy1, select 1 from information_schema.system_users... Oh don't get me started :-).

p

I can recommend URL_http://www.jooq.org [jOOQ] .

p

It provides a lot of great features, also a intuitive DSL for SQL and a extremly customable reverse- engineering approach.

p

jOOQ effectively combines complex SQL, typesafety, source code generation, active records, stored procedures, advanced data types, and Java in a fluent, intuitive DSL.

n

Do you use it?

o

How do you find it?

o

I use it to generate custom source code from DDL.

o

It's working great!.

p

Hibernate Criteria API (not plain SQL though, but very powerful and in active development): CODESNIPPET_JAVA1 .

p

The problem is that it doesn't map to SQL as I understand, right?

o

this doesn't generate SQL and is a nightmare to debug when it doesn't follow the rule of least astonishment ( doesn't work as expected ).

o

It does generate SQL (at the end) and it surprises no one.

o

Benefit -- it is portable across databases.

p

+1 Upvoted again to level up.

p

I don't know why this was downvoted.

n

After all, it's become the standard way of doing this with JPA, even if it's a bit verbose...

n

What is the level of query complexity that you achieved to reach with the JPA Criteria API, without making the query utterly unreadable?

o

Do you have an example of a nested select in an IN / EXISTS clause, or of a self-join using aliases for the Sale entity, etc?

o

I'm curious.

o

Comments do not give much space to provide the examples, but you're welcome to review them at URL_http://docs.jboss.org/hibernate/core/3.5/reference/en/html/querycriteria.html .

p

URL_http://db.apache.org/ddlutils/ [ddlutils] is my best choice: URL_http://db .apache.org/ddlutils/api/org/apache/ddlutils/platform/SqlBuilder.html [http:// db.apache.org/ddlutils/api/org/apache/ddlutils/platform/SqlBuilder.html] here is create example(groovy): CODESNIPPET_JAVA1 .

p

SQL parser library for Java.

o

Is there a good open-source Java library for parsing SQL statements?

o

If possible, it should be customizable or flexible enough to also be able to parse (or at least ignore) vendor-specific syntax (such as Oracle tablespace definitions or MySQL's LIMIT clause).

p

If not, strict adherence to the SQL standard is also fine.

p

I need this for two things: providing an SQL interface to a non-SQL database (mapping to internal API calls) rewriting SQL before it goes to the actual database (e.g.

o

Oracle) .

o

URL_http://jparsec.codehaus.org .

o

how is this question not constructive?

o

what's wrong with you, Stackoverflow?

o

URL_http://www.antlr3.org/grammar/list.html [ANTLR] has an ANSI SQL grammar available.

o

You can use that to create your own parser.

o

Why use ANTLR when you can implement your own parser generator?

o

Why generate your own parser generator when you can use ANTLR?

o

Any links to how one can use Antlr SQL Grammar to parse these queries?

o

I looked at the grammar of some PL/SQL Parsers as well as Lexers and Parsers but was unable to fathom how to use one.

p

Would appreciate any links.

p

You feed the grammar to ANTLR, which spits out the lexer/parser classes that you'll then compile and run.

o

The best source I can think of is the ANTLR reference: URL_http://www.amazon.com/Definitive-Antlr-Reference-Domain-Specific - Programmers/dp/0978739256/ref=sr_1_1?ie=UTF8&qid=1327847925&sr=8-1.

p

The link [ URL_http://www.antlr.org/grammar/list](http://www.antlr.org/grammar/list ) is broken.

n

Does anyone know where the sql grammar is located?

o

We're up to ANTLR 4 now.

o

Perhaps the old grammars don't run on the new version.

o

URL_http://www.antlr3.org/grammar/list.html .

o

URL_http://jsqlparser.sourceforge.net/ [JSqlParser] .

o

If you need a parser there should be a parser in the code base of URL_http://db.apache.org/derby/ [Apache-Derby] .

o

with vendor-specific SQL** You may want to look at the URL_http://java.sun.com/javase/6/docs/api/java/sql /Connection.html#nativeSQL%28java.lang.String%29 [.native()] method on the jdbc Connection object which you can pass it vendor neutral queries that will get postprocessed into vendor specific queries.

o

That native() method looks interesting.

p

Are there any examples as to how it can be used?

o

What kind of conversions are possible there?

o

URL_http://www.sqlparser.com/sql-parser-java.php [General-SQL-Parser-for-Java] is not open source, but is exactly what you are looking after.

n

The best sql parser for Java +1.

p

Try URL_http://zql.sourceforge.net/ [Zql] .

o

zql is good for basic queries but when you try to parse a query that contains join statement, it blows up.

n

so i don't suggest it.

o

Hibernate uses ANTLR for sql and hql parsing.

o

JSqlParser is also a good option.although it has some bugs(or some features not implemented) while parsing oracle pl/sql.see its forum for detail.

p

so if you're parsing oracle pl/sql, ANTLR is recommended.

p

btw, anltr is under BSD.

o

What you want to do with the parsed SQL?

o

I can recommend a few Java implementation of Lex/Yacc ( URL_http://byaccj.sourceforge.net/ [BYACC/J] , URL_http://www2.cs.tum.edu/projects/cup/ [Java-Cup] ) that you can use an existing SQL grammar with.

p

If you want to actually do something with the resulting parsed grammar, I might suggest looking at URL_http://db.apache.org/derby/ [Derby] , an open source SQL database written in Java.

p

Is the SQL parser used in Derby available as an independent JAR ?

o