Function pass1_rse

src/dsql/pass1.cpp:1765–1791

Wrapper for pass1_rse_impl. Substitute recursive CTE alias (if needed) and call pass1_rse_impl.

// Wrapper for pass1_rse_impl. Substitute recursive CTE alias (if needed) and call pass1_rse_impl.
static RseNode* pass1_rse(DsqlCompilerScratch* dsqlScratch, RecordSourceNode* input,
	ValueListNode* order, RowsClause* rows, bool updateLock, bool skipLocked, USHORT flags)
{
	string save_alias;
	RseNode* rseNode = nodeAs<RseNode>(input);
	const bool isRecursive = rseNode && (rseNode->dsqlFlags & RecordSourceNode::DFLAG_RECURSIVE);
	AutoSetRestore<USHORT> autoScopeLevel(&dsqlScratch->scopeLevel, dsqlScratch->scopeLevel);

	if (isRecursive)
	{
		fb_assert(dsqlScratch->recursiveCtx);
		save_alias = dsqlScratch->recursiveCtx->ctx_alias;

		dsqlScratch->recursiveCtx->ctx_alias = *dsqlScratch->getNextCTEAlias();

		// ASF: We need to reset the scope level to the same value found in the non-recursive
		// part of the query, to verify usage of aggregate functions correctly. See CORE-4322.
		dsqlScratch->scopeLevel = dsqlScratch->recursiveCtx->ctx_scope_level;
	}

	RseNode* ret = pass1_rse_impl(dsqlScratch, input, order, rows, updateLock, skipLocked, flags);

	if (isRecursive)
		dsqlScratch->recursiveCtx->ctx_alias = save_alias;

	return ret;
}


// Compile a record selection expression. The input node may either be a "select_expression"