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54 lines
1.5 KiB
JavaScript
54 lines
1.5 KiB
JavaScript
import fs from 'fs';
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/**
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* ## sqlite与postgres不同点
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* 1.
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* sqlite: AUTOINCREAMENT
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* postgresql: GENERATED BY DEFAULT AS IDENTITY
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*
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* 2.
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* sqlite: datetime
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* postgresql: timestamp
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*
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* 3.
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* sqlite: update sqlite_sequence set seq = 1000 where name = 'sys_role' ;
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* postgresql: select setval('sys_role_id_seq', 1000);
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*
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* 4.
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* sqlite: "disabled" boolean DEFAULT (0)
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* postgresql: "disabled" boolean DEFAULT (false)
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*
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* 5.
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* sqlite: last_insert_rowid()
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* postgresql: LASTVAL()
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*
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* 6.
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* sqlite: integer
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* postgresql: bigint
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*/
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function transform() {
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// 读取文件列表
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const sqliteFiles = fs.readdirSync('./migration/');
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const pgFiles = fs.readdirSync('./migration-pg');
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//找出pg里面没有的文件
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const notFiles = sqliteFiles.filter(file => !pgFiles.includes(file));
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for (const notFile of notFiles) {
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//开始转换
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const sqliteSql = fs.readFileSync(`./migration/${notFile}`, 'utf-8');
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let pgSql = sqliteSql.replace(/AUTOINCREMENT/g, 'GENERATED BY DEFAULT AS IDENTITY');
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pgSql = pgSql.replace(/datetime/g, 'timestamp');
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pgSql = pgSql.replace(/boolean DEFAULT \(0\)/g, 'boolean DEFAULT (false)');
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pgSql = pgSql.replace(/integer/g, 'bigint');
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pgSql = pgSql.replace(/last_insert_rowid\(\)/g, 'LASTVAL()');
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fs.writeFileSync(`./migration-pg/${notFile}`, pgSql);
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}
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if (notFiles.length > 0) {
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console.log('sqlite->pg 转换完成');
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throw new Error('sqlite->pg 转换完成，有更新，需要测试pg');
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} else {
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console.log('sql无需更新');
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}
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}
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transform();
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