Is it possible to query the database table with the rule inputs that are coming from nowhere?

You can reference local variables from parent rules even if you do not explicitly pass them in. This is not a good practice though.

But here the scenario is completely different. The parent interface is not passing any parameters, Its just the rule call something like
rule!rulename()

and when we check inside the rule there are around 10 rule inputs declared on the basis of which data is displaying from the table

Can you share with us the code and/or configuration of the query rule? Also, just to clarify, is it an expression rule that does a query (queryEntity), or an old-style query rule?

Can you share with us the code and/or configuration of the query rule? Also, just to clarify, is it an expression rule that does a query (queryEntity), or an old-style query rule?

It is an expression rule that does a query. Below is the code from parent interface which calls the expression local!knowledgeBase: rule!SCM_getVWKnowledgeBase(pagingInfo: null).data,

Below is the code in expression rule

a!queryEntity(
entity: cons!SCM_DSE_VW_KNOWLEDGE_BASE,
query: a!query(
logicalExpression: if(
or(
not(isnull(ri!id)),
not(isnull(ri!topic)),
not(isnull(ri!description)),
not(isnull(ri!visibilityGroup)),
not(isnull(ri!categoryTypeId)),
not(isnull(ri!subCategoryTypeId)),
not(isnull(ri!serviceOfferingTypeId)),
not(isnull(ri!createdBy)),
not(isnull(ri!createdOn)),
not(isnull(ri!updatedBy)),
not(isnull(ri!updatedOn))
),
a!queryLogicalExpression(
operator: "AND",
filters: {
if(
not(isnull(ri!id)),
a!queryFilter(
field: "id",
operator: "=",
value: ri!id
),
{}
),
if(
not(isnull(ri!topic)),
a!queryFilter(
field: "topic",
operator: "includes",
value: ri!topic
),
{}
),
if(
not(isnull(ri!description)),
a!queryFilter(
field: "description",
operator: "includes",
value: ri!description
),
{}
),
if(
not(isnull(ri!visibilityGroup)),
a!queryFilter(
field: "visibilityGroup",
operator: "=",
value: ri!visibilityGroup
),
{}
),
if(
not(isnull(ri!categoryTypeId)),
a!queryFilter(
field: "categoryType",
operator: "includes",
value: ri!categoryTypeId
),
{}
),
if(
not(isnull(ri!subCategoryTypeId)),
a!queryFilter(
field: "subCategoryType",
operator: "includes",
value: ri!subCategoryTypeId
),
{}
),
if(
not(isnull(ri!serviceOfferingTypeId)),
a!queryFilter(
field: "serviceOfferingType",
operator: "includes",
value: ri!serviceOfferingTypeId
),
{}
),
if(
not(isnull(ri!createdBy)),
a!queryFilter(
field: "createdBy",
operator: "=",
value: ri!createdBy
),
{}
),
if(
not(isnull(ri!createdOn)),
a!queryFilter(
field: "createdOn",
operator: "=",
value: ri!createdOn
),
{}
),
if(
not(isnull(ri!updatedBy)),
a!queryFilter(
field: "updatedBy",
operator: "=",
value: ri!updatedBy
),
{}
),
if(
not(isnull(ri!updatedOn)),
a!queryFilter(
field: "updatedOn",
operator: "=",
value: ri!createdOn
),
{}
)
}
),
null
),
pagingInfo: if(
not(isnull(ri!pagingInfo)),
ri!pagingInfo,
a!pagingInfo(1, -1)
)
)
)