sqllogictest

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Comment:Fix typos and poor wording in the about.wiki document.
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SHA1: f30534fbb06981c98072244d344ba4c4f02600bb
User & Date: drh 2008-11-30 13:09:27.000
Context
2008-11-30
20:42
Fix the select1.proto test script so that avoids the use of NULL values. In about.wiki, warn user to not use NULL values together with ORDER BY. check-in: f84e0eed40 user: drh tags: trunk
13:09
Fix typos and poor wording in the about.wiki document. check-in: f30534fbb0 user: drh tags: trunk
01:58
Updates to the About document. check-in: 1e99bb8828 user: drh tags: trunk
Changes
Unified Diff Ignore Whitespace Patch
Changes to about.wiki. 
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<h1>About Sqllogictest</h1>

Sqllogictest is a program designed to verify that an SQL database engine
computes correct results to queries by comparing the results to identical
queries submitted to other SQL database engines.  Sqllogictest was originally
designed to test [http://www.sqlite.org/ | SQLite], but it is database engine
neutral and can just as easily be used to test other database products.

Sqllogictest is concerned only with correct results.  
No attention is paid to performance,
optimal use of indices, disk and memory usage, transactional behavior,
or concurrancy and locking issues.  
The sqllogictest program seeks to answer just one question:

<blockquote><i>
Does the database engine compute the correct answer.
</i></blockquote>

Every SQL database engine has test vectors used to validate its operation.
These manually generated test vectors are important.  But generating
test vectors is tedious, since the correct solutions must be computed
and verifed by hand.  The sqllogictest program is designed to sidestep
this tedium by using independently developed database engines generate
the reference test results automatically.  This allows millions of test 
vectors to be producted by simple scripts, which in turn provides much 
more thorough and complete testing of the database engine.

<h2>Operation</h2>

The sqllogictest program is driven by test scripts containing SQL statements




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<h1>About Sqllogictest</h1>

Sqllogictest is a program designed to verify that an SQL database engine
computes correct results by comparing the results to identical
queries from other SQL database engines.  Sqllogictest was originally
designed to test [http://www.sqlite.org/ | SQLite], but it is database engine
neutral and can just as easily be used to test other database products.

Sqllogictest is concerned only with correct results.  
No attention is paid to performance,
optimal use of indices, disk and memory usage, transactional behavior,
or concurrancy and locking issues.  
The sqllogictest program seeks to answer just one question:

<blockquote><i>
Does the database engine compute the correct answer.
</i></blockquote>

Every SQL database engine has test vectors used to validate its operation.
These manually generated test vectors are important.  But generating
test vectors is tedious, since the correct solutions must be computed
and verifed by hand.  The sqllogictest program is designed to sidestep
this tedium by using independently developed database engines to generate
the reference test results automatically.  This allows millions of test 
vectors to be producted by simple scripts, which in turn provides much 
more thorough and complete testing of the database engine.

<h2>Operation</h2>

The sqllogictest program is driven by test scripts containing SQL statements
︙︙