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SingleStoreModifyColumn Class — drizzle-orm Architecture

Architecture documentation for the SingleStoreModifyColumn class in sqlgenerator.ts from the drizzle-orm codebase.

Class typescript DrizzleKit

Entity Profile

Dependency Diagram

graph TD
  45637ff7_2ed2_cc33_979a_415ff4524617["SingleStoreModifyColumn"]
  fe4174c7_3b9c_5b26_98a0_b2395ca21939["sqlgenerator.ts"]
  45637ff7_2ed2_cc33_979a_415ff4524617 -->|defined in| fe4174c7_3b9c_5b26_98a0_b2395ca21939
  b11c9f62_be27_abd7_2576_2531d3ac44ad["can()"]
  45637ff7_2ed2_cc33_979a_415ff4524617 -->|method| b11c9f62_be27_abd7_2576_2531d3ac44ad
  b5767e0b_a4e5_4d03_2af8_f389f077a555["convert()"]
  45637ff7_2ed2_cc33_979a_415ff4524617 -->|method| b5767e0b_a4e5_4d03_2af8_f389f077a555

Relationship Graph

Source Code

drizzle-kit/src/sqlgenerator.ts lines 2832–3052

class SingleStoreModifyColumn extends Convertor {
	can(statement: JsonStatement, dialect: Dialect): boolean {
		return (
			(statement.type === 'alter_table_alter_column_set_type'
				|| statement.type === 'alter_table_alter_column_set_notnull'
				|| statement.type === 'alter_table_alter_column_drop_notnull'
				|| statement.type === 'alter_table_alter_column_drop_on_update'
				|| statement.type === 'alter_table_alter_column_set_on_update'
				|| statement.type === 'alter_table_alter_column_set_autoincrement'
				|| statement.type === 'alter_table_alter_column_drop_autoincrement'
				|| statement.type === 'alter_table_alter_column_set_default'
				|| statement.type === 'alter_table_alter_column_drop_default'
				|| statement.type === 'alter_table_alter_column_set_generated'
				|| statement.type === 'alter_table_alter_column_drop_generated')
			&& dialect === 'singlestore'
		);
	}

	convert(statement: SingleStoreModifyColumnStatement) {
		const { tableName, columnName } = statement;
		let columnType = ``;
		let columnDefault: any = '';
		let columnNotNull = '';
		let columnOnUpdate = '';
		let columnAutoincrement = '';
		let primaryKey = statement.columnPk ? ' PRIMARY KEY' : '';
		let columnGenerated = '';

		if (statement.type === 'alter_table_alter_column_drop_notnull') {
			columnType = ` ${statement.newDataType}`;
			columnDefault = statement.columnDefault
				? ` DEFAULT ${statement.columnDefault}`
				: '';
			columnNotNull = statement.columnNotNull ? ` NOT NULL` : '';
			columnOnUpdate = statement.columnOnUpdate
				? ` ON UPDATE CURRENT_TIMESTAMP`
				: '';
			columnAutoincrement = statement.columnAutoIncrement
				? ' AUTO_INCREMENT'
				: '';
		} else if (statement.type === 'alter_table_alter_column_set_notnull') {
			columnNotNull = ` NOT NULL`;
			columnType = ` ${statement.newDataType}`;
			columnDefault = statement.columnDefault
				? ` DEFAULT ${statement.columnDefault}`
				: '';
			columnOnUpdate = statement.columnOnUpdate
				? ` ON UPDATE CURRENT_TIMESTAMP`
				: '';
			columnAutoincrement = statement.columnAutoIncrement
				? ' AUTO_INCREMENT'
				: '';
		} else if (statement.type === 'alter_table_alter_column_drop_on_update') {
			columnNotNull = statement.columnNotNull ? ` NOT NULL` : '';
			columnType = ` ${statement.newDataType}`;
			columnDefault = statement.columnDefault
				? ` DEFAULT ${statement.columnDefault}`
				: '';
			columnOnUpdate = '';
			columnAutoincrement = statement.columnAutoIncrement
				? ' AUTO_INCREMENT'
				: '';
		} else if (statement.type === 'alter_table_alter_column_set_on_update') {
			columnNotNull = statement.columnNotNull ? ` NOT NULL` : '';
			columnOnUpdate = ` ON UPDATE CURRENT_TIMESTAMP`;
			columnType = ` ${statement.newDataType}`;
			columnDefault = statement.columnDefault
				? ` DEFAULT ${statement.columnDefault}`
				: '';
			columnAutoincrement = statement.columnAutoIncrement
				? ' AUTO_INCREMENT'
				: '';
		} else if (
			statement.type === 'alter_table_alter_column_set_autoincrement'
		) {
			columnNotNull = statement.columnNotNull ? ` NOT NULL` : '';
			columnOnUpdate = columnOnUpdate = statement.columnOnUpdate
				? ` ON UPDATE CURRENT_TIMESTAMP`
				: '';
			columnType = ` ${statement.newDataType}`;
			columnDefault = statement.columnDefault

Domain

Defined In

Source

Frequently Asked Questions

What is the SingleStoreModifyColumn class?
SingleStoreModifyColumn is a class in the drizzle-orm codebase, defined in drizzle-kit/src/sqlgenerator.ts.
Where is SingleStoreModifyColumn defined?
SingleStoreModifyColumn is defined in drizzle-kit/src/sqlgenerator.ts at line 2832.

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