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Enhance duckdbExtension #2843

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merged 2 commits into from
May 28, 2024
Merged

Enhance duckdbExtension #2843

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e4157e6
Enhance duckdbExtension
PrateekGarg-gs May 10, 2024
7f40f67
Update duckdbExtension.pure
PrateekGarg-gs May 21, 2024
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156 changes: 152 additions & 4 deletions ...rc/main/resources/core_relational_duckdb/relational/sqlQueryToString/duckdbExtension.pure
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Original file line number Diff line number Diff line change
Expand Up @@ -16,35 +16,183 @@ function <<db.ExtensionLoader>> meta::relational::functions::sqlQueryToString::d

function <<access.private>> meta::relational::functions::sqlQueryToString::duckDB::createDbExtensionForDuckDB():DbExtension[1]
{
let reservedWords = duckDBReservedWords();
let reservedWords = duckDBReservedWords()->map(kv|$kv->toLower());
let literalProcessors = getDefaultLiteralProcessors()->putAll(getLiteralProcessorsForDuckDB());
let literalProcessor = {type:Type[1]| $literalProcessors->get(if($type->instanceOf(Enumeration), | Enum, | $type))->toOne()};
let dynaFuncDispatch = getDynaFunctionToSqlDefault($literalProcessor)->groupBy(d| $d.funcName)->putAll(
getDynaFunctionToSqlForDuckDB()->groupBy(d| $d.funcName))->getDynaFunctionDispatcher();
^DbExtension(
isBooleanLiteralSupported = true,
isDbReservedIdentifier = {str:String[1]| $str->in($reservedWords)},
isDbReservedIdentifier = {str:String[1]| $str->toLower()->in($reservedWords); }, // check case insensitive
joinStringsProcessor = processJoinStringsOperationWithConcatCall_JoinStrings_1__SqlGenerationContext_1__String_1_,
literalProcessor = $literalProcessor,
selectSQLQueryProcessor = processSelectSQLQueryForDuckDB_SelectSQLQuery_1__SqlGenerationContext_1__Boolean_1__String_1_,
identifierProcessor = processIdentifierWithDoubleQuotes_String_1__DbConfig_1__String_1_,
dynaFuncDispatch = $dynaFuncDispatch
dynaFuncDispatch = $dynaFuncDispatch,
ddlCommandsTranslator = getDDLCommandsTranslator()
);
}

function <<access.private>> meta::relational::functions::sqlQueryToString::duckDB::getDDLCommandsTranslator(): RelationalDDLCommandsTranslator[1]
{
^RelationalDDLCommandsTranslator(
createSchema = translateCreateSchemaStatementDefault_CreateSchemaSQL_1__DbConfig_1__String_1_,
dropSchema = translateDropSchemaStatementDefault_DropSchemaSQL_1__DbConfig_1__String_1_,
createTable = translateCreateTableStatementDefault_CreateTableSQL_1__DbConfig_1__String_1_,
dropTable = translateDropTableStatementDefault_DropTableSQL_1__DbConfig_1__String_1_,
loadTable = loadValuesToDbTableDefault_LoadTableSQL_1__DbConfig_1__String_MANY_
);
}

function <<access.private>> meta::relational::functions::sqlQueryToString::duckDB::getLiteralProcessorsForDuckDB():Map<Type,LiteralProcessor>[1]
{
let literalReplacementPairForString = ^LiteralReplacement(old = '\'', new = '\'\'');

newMap([
]->cast(@Pair<Type,LiteralProcessor>))

pair(StrictDate, ^LiteralProcessor(format = '%s', transform = {d:StrictDate[1], dbTimeZone:String[0..1] | $d->convertDateToSqlStringDuckDB($dbTimeZone)})),
pair(DateTime, ^LiteralProcessor(format = '%s', transform = {d:DateTime[1], dbTimeZone:String[0..1] | $d->convertDateToSqlStringDuckDB($dbTimeZone)})),
pair(Date, ^LiteralProcessor(format = '%s', transform = {d:Date[1], dbTimeZone:String[0..1] | $d->convertDateToSqlStringDuckDB($dbTimeZone)}))
]);
}

function meta::relational::functions::sqlQueryToString::duckDB::convertDateToSqlStringDuckDB(date:Date[1], dbTimeZone:String[0..1]):String[1]
{
//Default to UTC, if timezone is not specified. GMT is the same as UTC, UTC is not actually a timezone
let timeZone = if( $dbTimeZone->isEmpty(), | 'GMT', | $dbTimeZone->toOne());
if($date->hasSecond(),
| if ($date->hasSubsecond(),
| let d= format('%t{[' + $timeZone + ']yyyy-MM-dd HH:mm:ss.SSSSSS}', $date);
format('TIMESTAMP \'%s\'',$d);,
| let d= format('%t{[' + $timeZone + ']yyyy-MM-dd HH:mm:ss}', $date);
format('TIMESTAMP_S \'%s\'',$d);
),
| let d =format('%t{[' + $timeZone + ']yyyy-MM-dd}', $date);
format('DATE \'%s\'',$d);
);
}
function <<access.private>> meta::relational::functions::sqlQueryToString::duckDB::getDynaFunctionToSqlForDuckDB(): DynaFunctionToSql[*]
{
let allStates = allGenerationStates();

[
dynaFnToSql('adjust', $allStates, ^ToSql(format='date_add(%s)', transform={p:String[3] | $p->at(0) + ',' + constructIntervalFunction($p->at(2), $p->at(1)) })),
dynaFnToSql('booland', $allStates, ^ToSql(format='every(%s)')),
dynaFnToSql('boolor', $allStates, ^ToSql(format='any(%s)')),
dynaFnToSql('castBoolean', $allStates, ^ToSql(format='cast(%s as boolean)')),
dynaFnToSql('chr', $allStates, ^ToSql(format='char(%s)')),
dynaFnToSql('concat', $allStates, ^ToSql(format='concat%s', transform={p:String[*]|$p->joinStrings('(', ', ', ')')})),
// dynaFnToSql('convertDate', $allStates, ^ToSql(format='%s', transform={p:String[*] | $p->convertToDateH2()})),
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// dynaFnToSql('convertDateTime', $allStates, ^ToSql(format='%s' , transform={p:String[*] | $p->convertToDateTimeH2()})),
dynaFnToSql('convertVarchar128', $allStates, ^ToSql(format='convert(%s, VARCHAR(128))')),
dynaFnToSql('dateDiff', $allStates, ^ToSql(format='datediff(\'%s\',%s,%s)', transform={p:String[*]|[$p->at(2)->replace('\'', '')->processDateDiffDurationUnitForDuckDB(),$p->at(0),$p->at(1)]})),
dynaFnToSql('datePart', $allStates, ^ToSql(format='date_trunc(\'day\', %s)')),
dynaFnToSql('dayOfMonth', $allStates, ^ToSql(format='day(%s)')),
dynaFnToSql('dayOfWeek', $allStates, ^ToSql(format='dayname(%s)')),
dynaFnToSql('dayOfWeekNumber', $allStates, ^ToSql(format='%s',transform=dayOfWeekNumberForDuckDB_String_$1_2$__String_1_)),
dynaFnToSql('dayOfYear', $allStates, ^ToSql(format='day(%s)')),
// dynaFnToSql('decodeBase64', $allStates, ^ToSql(format='legend_h2_extension_base64_decode(%s)')),
// dynaFnToSql('encodeBase64', $allStates, ^ToSql(format='legend_h2_extension_base64_encode(%s)')),
// dynaFnToSql('extractFromSemiStructured', $allStates, ^ToSql(format='%s', transform={p:String[3]|$p->processExtractFromSemiStructuredParamsForH2()})),
dynaFnToSql('firstDayOfMonth', $allStates, ^ToSql(format='date_trunc(\'month\', %s)', transform={p:String[1] | $p->repeat(1)})),
dynaFnToSql('firstDayOfQuarter', $allStates, ^ToSql(format='date_trunc(\'quarter\', %s)', transform={p:String[1] | $p->repeat(1)})),
dynaFnToSql('firstDayOfThisMonth', $allStates, ^ToSql(format='date_trunc(\'month\', now())')),
dynaFnToSql('firstDayOfThisQuarter', $allStates, ^ToSql(format='date_trunc(\'quarter\', now())')),
dynaFnToSql('firstDayOfThisYear', $allStates, ^ToSql(format='date_trunc(\'year\',now())')),
dynaFnToSql('firstDayOfWeek', $allStates, ^ToSql(format='date_add(%s, to_days(cast(-(isodow(%s)-1) as integer)))', transform={p:String[1] | $p->repeat(2)})),
dynaFnToSql('firstDayOfYear', $allStates, ^ToSql(format='date_trunc(\'year\', %s)', transform={p:String[1] | $p->repeat(1)})),
dynaFnToSql('firstHourOfDay', $allStates, ^ToSql(format='CAST(date_trunc(\'day\', %s) AS TIMESTAMP_S)', transform={p:String[1] | $p->repeat(1)})),
dynaFnToSql('firstMillisecondOfSecond',$allStates, ^ToSql(format='date_trunc(\'second\', %s)', transform={p:String[1] | $p->repeat(1)})),
dynaFnToSql('firstMinuteOfHour', $allStates, ^ToSql(format='date_trunc(\'hour\', %s)', transform={p:String[1] | $p->repeat(1)})),
dynaFnToSql('firstSecondOfMinute', $allStates, ^ToSql(format='date_trunc(\'minute\', %s)', transform={p:String[1] | $p->repeat(1)})),
dynaFnToSql('hour', $allStates, ^ToSql(format='hour(%s)')),
dynaFnToSql('indexOf', $allStates, ^ToSql(format='position(%s IN %s)', transform={p:String[2] | [$p->at(1), $p->at(0)]})),
dynaFnToSql('isNumeric', $allStates, ^ToSql(format='(lower(%s) = upper(%s))')),
dynaFnToSql('isAlphaNumeric', $allStates, ^ToSql(format='regexp_matches(%s,\'^[a-zA-Z0-9]*$\')', transform={p:String[1]|$p})),
dynaFnToSql('joinStrings', $allStates, ^ToSql(format='group_concat(%s, %s)')),
dynaFnToSql('length', $allStates, ^ToSql(format='length(%s)')),
dynaFnToSql('lpad', $allStates, ^ToSql(format='lpad(%s,%s,%s)', transform=processPaddingParams_String_MANY__String_MANY_)),
dynaFnToSql('matches', $allStates, ^ToSql(format= 'regexp_matches(%s,%s)', transform={p:String[2]|$p})),
dynaFnToSql('md5', $allStates, ^ToSql(format='md5(%s)')),
dynaFnToSql('minute', $allStates, ^ToSql(format='minute(%s)')),
dynaFnToSql('month', $allStates, ^ToSql(format='month(%s)')),
dynaFnToSql('monthNumber', $allStates, ^ToSql(format='month(%s)')),
dynaFnToSql('monthName', $allStates, ^ToSql(format='monthname(%s)')),
// dynaFnToSql('mostRecentDayOfWeek', $allStates, ^ToSql(format='date_add(DAY, case when %s - DAY_OF_WEEK(%s) > 0 then %s - DAY_OF_WEEK(%s) - 7 else %s - DAY_OF_WEEK(%s) end, %s)', transform={p:String[1..2] | $p->formatMostRecentH2('current_date()')}, parametersWithinWhenClause = [false, false])),
dynaFnToSql('now', $allStates, ^ToSql(format='now()')),
// dynaFnToSql('parseDate', $allStates, ^ToSql(format='parsedatetime(%s,%s)')),
dynaFnToSql('parseDecimal', $allStates, ^ToSql(format='cast(%s as decimal)')),
dynaFnToSql('parseFloat', $allStates, ^ToSql(format='cast(%s as float)')),
dynaFnToSql('parseInteger', $allStates, ^ToSql(format='cast(%s as integer)')),
// dynaFnToSql('parseJson', $allStates, ^ToSql(format='legend_h2_extension_json_parse(%s)')),
dynaFnToSql('position', $allStates, ^ToSql(format='position(%s, %s)')),
// dynaFnToSql('previousDayOfWeek', $allStates, ^ToSql(format='date_add(DAY, case when %s - DAY_OF_WEEK(%s) >= 0 then %s - DAY_OF_WEEK(%s) - 7 else %s - DAY_OF_WEEK(%s) end, %s)', transform={p:String[1..2] | $p->formatMostRecentH2('current_date()')}, parametersWithinWhenClause = [false, false])),
dynaFnToSql('quarter', $allStates, ^ToSql(format='quarter(%s)')),
dynaFnToSql('quarterNumber', $allStates, ^ToSql(format='quarter(%s)')),
dynaFnToSql('reverseString', $allStates, ^ToSql(format='legend_h2_extension_reverse_string(%s)')),
dynaFnToSql('round', $allStates, ^ToSql(format='round(%s, %s)', transform=transformRound_String_MANY__String_MANY_)),
dynaFnToSql('rpad', $allStates, ^ToSql(format='rpad(%s,%s,%s)', transform=processPaddingParams_String_MANY__String_MANY_)),
dynaFnToSql('second', $allStates, ^ToSql(format='second(%s)')),
dynaFnToSql('sha1', $allStates, ^ToSql(format='sha1(%s)')),
dynaFnToSql('sha256', $allStates, ^ToSql(format='sha256(%s)')),
dynaFnToSql('splitPart', $allStates, ^ToSql(format='split_part(%s, %s, %s)')),
dynaFnToSql('substring', $allStates, ^ToSql(format='substring%s', transform={p:String[*]|$p->joinStrings('(', ', ', ')')})),
dynaFnToSql('stdDevPopulation', $allStates, ^ToSql(format='stddev_pop(%s)')),
dynaFnToSql('stdDevSample', $allStates, ^ToSql(format='stddev_samp(%s)')),
dynaFnToSql('today', $allStates, ^ToSql(format='cast(today() as timestamp_s)')),
dynaFnToSql('toDecimal', $allStates, ^ToSql(format='cast(%s as decimal)')),
dynaFnToSql('toFloat', $allStates, ^ToSql(format='cast(%s as double precision)')),
dynaFnToSql('toString', $allStates, ^ToSql(format='cast(%s as varchar)')),
// dynaFnToSql('toTimestamp', $allStates, ^ToSql(format='%s', transform={p:String[2] | $p->transformToTimestampH2()})),
dynaFnToSql('weekOfYear', $allStates, ^ToSql(format='week(%s)')),
dynaFnToSql('year', $allStates, ^ToSql(format='year(%s)'))
];
}

function <<access.private>> meta::relational::functions::sqlQueryToString::duckDB::dayOfWeekNumberForDuckDB(dayOfWeek: String[1..2]):String[1]
{
if($dayOfWeek->size()==1,
| 'dayofweek('+$dayOfWeek->at(0)+') +1', //dayofweek(date) gives (Sunday = 0, Saturday = 6) >> we need from 1 to 7
| println($dayOfWeek);
assert(or($dayOfWeek->at(1)=='\'Sunday\'',$dayOfWeek->at(1)=='\'Monday\''),'DayOfWeekNumber Function requires either Sunday or Monday as First Day of Week');
if($dayOfWeek->at(1)=='\'Sunday\'',
|'dayofweek('+$dayOfWeek->at(0)+')+1',
|'isodow('+$dayOfWeek->at(0)+')' // (Monday = 1, Sunday = 7).
);
);
}

function <<access.private>> meta::relational::functions::sqlQueryToString::duckDB::processPaddingParams(p:String[*]):String[*]
{
if($p->size()==2,| $p->concatenate('\' \''),| $p); //pad with empty spaces by default
}

function <<access.private>> meta::relational::functions::sqlQueryToString::duckDB::processDateDiffDurationUnitForDuckDB(durationUnit:String[1]):String[1]
{
let durationEnumNames = [DurationUnit.YEARS,DurationUnit.MONTHS,DurationUnit.WEEKS,DurationUnit.DAYS,DurationUnit.HOURS,DurationUnit.MINUTES,DurationUnit.SECONDS,DurationUnit.MILLISECONDS]->map(e|$e->toString());
let durationDbNames = ['year', 'month', 'week', 'day', 'hour', 'minute', 'second', 'millisecond'];
$durationEnumNames->zip($durationDbNames)->filter(h | $h.first == $durationUnit).second->toOne();
}

function meta::relational::functions::sqlQueryToString::duckDB::constructIntervalFunction(unit:String[1], i:String[1]):String[1]
{
let unitWithoutQuotes = $unit->removeQuotesIfExist();

let interval_func= [
pair(DurationUnit.YEARS->toString(), 'to_years'),
pair(DurationUnit.MONTHS->toString(), 'to_months'),
pair(DurationUnit.WEEKS->toString(), 'to_weeks'),
pair(DurationUnit.DAYS->toString(), 'to_days'),
pair(DurationUnit.HOURS->toString(), 'to_hours'),
pair(DurationUnit.MINUTES->toString(), 'to_minutes'),
pair(DurationUnit.SECONDS->toString(), 'to_seconds'),
pair(DurationUnit.MILLISECONDS->toString(), 'to_milliseconds'),
pair(DurationUnit.MICROSECONDS->toString(), 'to_microseconds')
]->filter(p | $p.first == $unitWithoutQuotes).second->toOne('Unit not found: ' + $unitWithoutQuotes);

$interval_func +'(' + $i +')';
}

function <<access.private>> meta::relational::functions::sqlQueryToString::duckDB::processSelectSQLQueryForDuckDB(s:SelectSQLQuery[1], sgc:SqlGenerationContext[1], isSubSelect:Boolean[1]):String[1]
{
$s->processSelectSQLQueryForDuckDB($sgc.dbConfig, $sgc.format, $sgc.config, $isSubSelect, $sgc.extensions);
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