Context

Defined in: packages/db/src/query/builder/types.ts:45

Context - The central state container for query builder operations

This interface tracks all the information needed to build and type-check queries:

Schema Management:

• baseSchema: The original tables/collections from the from() clause
• schema: Current available tables (expands with joins, contracts with subqueries)

Query State:

• fromSourceName: Which table was used in from() or the first unionAll() source - needed for optionality logic
• hasJoins: Whether any joins have been added (affects result type inference)
• joinTypes: Maps table aliases to their join types for optionality calculations

Result Tracking:

• result: The final shape after select() - undefined until select is called

The context evolves through the query builder chain:

1. from() sets baseSchema and schema to the same thing
2. join() expands schema and sets hasJoins/joinTypes
3. select() sets result to the projected shape

Properties#

baseSchema#

baseSchema: ContextSchema;

Defined in: packages/db/src/query/builder/types.ts:47

fromSourceName#

fromSourceName: string;

Defined in: packages/db/src/query/builder/types.ts:53

fromSourceNames?#

optional fromSourceNames: readonly string[];

Defined in: packages/db/src/query/builder/types.ts:55

hasJoins?#

optional hasJoins: boolean;

Defined in: packages/db/src/query/builder/types.ts:59

hasResult?#

optional hasResult: true;

Defined in: packages/db/src/query/builder/types.ts:68

hasUnionFrom?#

optional hasUnionFrom: true;

Defined in: packages/db/src/query/builder/types.ts:57

joinTypes?#

optional joinTypes: Record<string, "inner" | "left" | "right" | "full" | "outer" | "cross">;

Defined in: packages/db/src/query/builder/types.ts:61

refsSchema?#

optional refsSchema: ContextSchema;

Defined in: packages/db/src/query/builder/types.ts:51

result?#

optional result: any;

Defined in: packages/db/src/query/builder/types.ts:66

schema#

schema: ContextSchema;

Defined in: packages/db/src/query/builder/types.ts:49

singleResult?#

optional singleResult: boolean;

Defined in: packages/db/src/query/builder/types.ts:70