mapColumnDefault() — drizzle-orm Function Reference

Architecture documentation for the mapColumnDefault() function in introspect-sqlite.ts from the drizzle-orm codebase.

Function typescript DrizzleKit SchemaDiffer called by 1

Entity Profile

DrizzleKit→ SchemaDiffer→ mapColumnDefault() — drizzle-orm Function Reference

Dependency Diagram

graph TD
  b01214dd_2df4_b735_8f58_fb99bf0c0831["mapColumnDefault()"]
  c1c349dd_2e31_d056_728c_c034cebb41c0["introspect-sqlite.ts"]
  b01214dd_2df4_b735_8f58_fb99bf0c0831 -->|defined in| c1c349dd_2e31_d056_728c_c034cebb41c0
  faade615_b82c_cd55_c09a_a253918d8b88["column()"]
  faade615_b82c_cd55_c09a_a253918d8b88 -->|calls| b01214dd_2df4_b735_8f58_fb99bf0c0831
  style b01214dd_2df4_b735_8f58_fb99bf0c0831 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

drizzle-kit/src/introspect-sqlite.ts lines 258–278

const mapColumnDefault = (defaultValue: any) => {
	if (
		typeof defaultValue === 'string'
		&& defaultValue.startsWith('(')
		&& defaultValue.endsWith(')')
	) {
		return `sql\`${defaultValue}\``;
	}
	// If default value is NULL as string it will come back from db as "'NULL'" and not just "NULL"
	if (defaultValue === 'NULL') {
		return `sql\`NULL\``;
	}

	if (
		typeof defaultValue === 'string'
	) {
		return defaultValue.substring(1, defaultValue.length - 1).replaceAll('"', '\\"').replaceAll("''", "'");
	}

	return defaultValue;
};