in kernel/sql-translator/jooq/src/main/java/org/apache/shardingsphere/sqltranslator/jooq/JooQDialectRegistry.java [39:46]
static {
DATABASE_DIALECT_MAP.put(TypedSPILoader.getService(DatabaseType.class, "PostgreSQL"), SQLDialect.POSTGRES);
DATABASE_DIALECT_MAP.put(TypedSPILoader.getService(DatabaseType.class, "MySQL"), SQLDialect.MYSQL);
DATABASE_DIALECT_MAP.put(TypedSPILoader.getService(DatabaseType.class, "MariaDB"), SQLDialect.MARIADB);
DATABASE_DIALECT_MAP.put(TypedSPILoader.getService(DatabaseType.class, "openGauss"), SQLDialect.POSTGRES);
DATABASE_DIALECT_MAP.put(TypedSPILoader.getService(DatabaseType.class, "H2"), SQLDialect.H2);
DATABASE_DIALECT_MAP.put(TypedSPILoader.getService(DatabaseType.class, "SQL92"), SQLDialect.DEFAULT);
}