import { ORMConfig, TableDefinition } from '../shared/types';
export declare class SqlMigrations {
    private config;
    constructor(config: ORMConfig);
    /**
     * Generate SQL CREATE TABLE statements for all tables
     */
    generateSQL(tables: TableDefinition[]): string;
    /**
     * Generate SQL for a single table
     */
    private generateTableSQL;
    /**
     * Map Appwrite field type to generic SQL type with constraints
     */
    private mapFieldToSQL;
    /**
     * Generate constraint clauses (UNIQUE, CHECK)
     */
    private generateConstraints;
    /**
     * Generate CHECK constraints for a field
     */
    private generateFieldCheckConstraints;
    /**
     * Format default value for SQL
     */
    private formatDefaultValue;
    /**
     * Escape single quotes in SQL strings
     */
    private escapeSqlString;
}
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