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								import { MysqlDialect } from './mysql_dialect';
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								import { PostgresqlDialect } from './postgres_dialect';
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								import { DMDialect } from '@/views/ops/db/dialect/dm_dialect';
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								import { SqlLanguage } from 'sql-formatter/lib/src/sqlFormatter';
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								export interface sqlColumnType {
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								    udtName: string;
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								    dataType: string;
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								    desc: string;
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								    space: string;
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								    range?: string;
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								}
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								export interface RowDefinition {
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								    name: string;
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								    type: string;
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								    value: string;
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								    length: string;
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								    numScale: string;
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								    notNull: boolean;
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								    pri: boolean;
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								    auto_increment: boolean;
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								    remark: string;
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								}
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								export interface IndexDefinition {
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								    indexName: string;
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								    columnNames: string[];
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								    unique: boolean;
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								    indexType: string;
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								    indexComment?: string;
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								}
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								export const commonCustomKeywords = ['GROUP BY', 'ORDER BY', 'LEFT JOIN', 'RIGHT JOIN', 'INNER JOIN', 'SELECT * FROM'];
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								export interface EditorCompletionItem {
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								    /** 用于显示 */
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								    label: string;
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								    /** 用于插入编辑器,可预置一些变量方便使用函数 */
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								    insertText?: string;
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								    /** 用于描述 */
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								    description: string;
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								}
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								export interface EditorCompletion {
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								    /** 关键字 */
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								    keywords: EditorCompletionItem[];
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								    /** 操作关键字 */
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								    operators: EditorCompletionItem[];
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								    /** 函数,包括内置函数和自定义函数 */
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								    functions: EditorCompletionItem[];
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								    /** 内置变量 */
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								    variables: EditorCompletionItem[];
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								}
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								// 定义一个数据类型的枚举,包含字符串、数字、日期、时间、日期时间
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								export enum DataType {
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								    String = 'string',
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								    Number = 'number',
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								    Date = 'date',
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								    Time = 'time',
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								    DateTime = 'datetime',
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								}
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								/** 列数据类型角标 */
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								export const ColumnTypeSubscript = {
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								    /** 字符串 */
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								    string: 'abc',
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								    /** 数字 */
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								    number: '123',
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								    /** 日期 */
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								    date: 'icon-clock',
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								    /** 时间 */
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								    time: 'icon-clock',
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								    /** 日期时间 */
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								    datetime: 'icon-clock',
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								};
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								// 数据库基础信息
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								export interface DialectInfo {
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								    /**
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								     * 图标
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								     */
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								    icon: string;
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								    /**
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								     * 默认端口
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								     */
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								    defaultPort: number;
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								    /**
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								     * 格式化sql的方言
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								     */
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								    formatSqlDialect: SqlLanguage;
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								    /**
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								     * 列字段类型
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								     */
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								    columnTypes: sqlColumnType[];
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								    /**
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								     * 编辑器一些固定代码提示(关键字、操作符)
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								     */
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								    editorCompletions: EditorCompletion;
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								}
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								export const DbType = {
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								    mysql: 'mysql',
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								    postgresql: 'postgres',
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								    dm: 'dm', // 达梦
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								};
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								export interface DbDialect {
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								    /**
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								     * 获取一些数据库默认信息
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								     */
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								    getInfo(): DialectInfo;
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								    /**
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								     * 获取默认查询sql
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								     * @param table  表名
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								     * @param condition 条件
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								     * @param orderBy 排序
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								     * @param pageNum  页数
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								     * @param limit  条数
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								     */
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								    getDefaultSelectSql(table: string, condition: string, orderBy: string, pageNum: number, limit: number): string;
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								    getPageSql(pageNum: number, limit: number): string;
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								    getDefaultRows(): RowDefinition[];
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								    getDefaultIndex(): IndexDefinition;
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											2023-11-26 21:21:35 +08:00
										 
									 
								 
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								    /**
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								     * 包裹数据库表名、字段名等,避免使用关键字为字段名或表名时报错
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								     * @param name 名称
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								     */
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								    wrapName(name: string): string;
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								    /**
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								     * 生成创建表sql
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								     * @param tableData 建表数据
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								     */
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								    getCreateTableSql(tableData: any): string;
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								    /**
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								     * 生成创建索引sql
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								     * @param tableData
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								     */
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								    getCreateIndexSql(tableData: any): string;
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								    /**
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								     * 生成编辑列sql
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								     * @param tableName 表名
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								     * @param changeData 改变信息
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								     */
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											2023-12-07 17:32:32 +08:00
										 
									 
								 
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								    getModifyColumnSql(tableName: string, changeData: { del: RowDefinition[]; add: RowDefinition[]; upd: RowDefinition[] }): string;
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											2023-11-26 21:21:35 +08:00
										 
									 
								 
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								    /**
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								     * 生成编辑索引sql
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								     * @param tableName   表名
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								     * @param changeData  改变数据
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								     */
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								    getModifyIndexSql(tableName: string, changeData: { del: any[]; add: any[]; upd: any[] }): string;
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											2023-12-15 11:29:57 +08:00
										 
									 
								 
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								    /** 通过数据库字段类型,返回基本数据类型 */
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								    getDataType: (columnType: string) => DataType;
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											2023-11-26 21:21:35 +08:00
										 
									 
								 
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								}
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								let mysqlDialect = new MysqlDialect();
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								let postgresDialect = new PostgresqlDialect();
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											2023-12-06 14:50:02 +08:00
										 
									 
								 
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								let dmDialect = new DMDialect();
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								export const getDbDialect = (dbType: string | undefined): DbDialect => {
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											2023-12-11 01:00:09 +08:00
										 
									 
								 
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								    if (!dbType) {
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								        return mysqlDialect;
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								    }
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								    if (dbType === DbType.mysql) {
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								        return mysqlDialect;
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								    }
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								    if (dbType === DbType.postgresql) {
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								 | 
							
							
								        return postgresDialect;
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								    }
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											2023-12-06 14:50:02 +08:00
										 
									 
								 
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								 | 
							
							
								    if (dbType === DbType.dm) {
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								 | 
							
							
								        return dmDialect;
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								 | 
							
							
								    }
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											2023-11-26 21:21:35 +08:00
										 
									 
								 
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								 | 
							
							
								    throw new Error('不支持的数据库');
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								 | 
							
							
								};
							 |