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createSequence.ts
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createSequence.ts
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import type { MigrationOptions } from '../../types';
import type {
DropOptions,
IfNotExistsOption,
Name,
Reversible,
} from '../generalTypes';
import { dropSequence } from './dropSequence';
import type { SequenceOptions } from './shared';
import { parseSequenceOptions } from './shared';
export interface SequenceOptionsCreate
extends SequenceOptions,
IfNotExistsOption {
temporary?: boolean;
}
export type CreateSequenceFn = (
sequenceName: Name,
sequenceOptions?: SequenceOptionsCreate & DropOptions
) => string | string[];
export type CreateSequence = Reversible<CreateSequenceFn>;
export function createSequence(mOptions: MigrationOptions): CreateSequence {
const _create: CreateSequence = (sequenceName, options = {}) => {
const { temporary, ifNotExists } = options;
const temporaryStr = temporary ? ' TEMPORARY' : '';
const ifNotExistsStr = ifNotExists ? ' IF NOT EXISTS' : '';
const sequenceNameStr = mOptions.literal(sequenceName);
const clausesStr = parseSequenceOptions(
mOptions.typeShorthands,
options
).join('\n ');
return `CREATE${temporaryStr} SEQUENCE${ifNotExistsStr} ${sequenceNameStr}
${clausesStr};`;
};
_create.reverse = dropSequence(mOptions);
return _create;
}