Jack Ling e0c032d1b1 fix(database/gdb): handle empty string in Fields() gracefully (#4700) ...

## Summary
Fix bug where `Fields("")` with empty string generates invalid SQL
`SELECT FROM table`.

## Root Cause
`mappingAndFilterToTableFields` method doesn't skip empty strings when
processing fields:
- `gstr.SplitAndTrim("", ",")` returns empty array
- No fields added to query
- Results in invalid SQL: `SELECT FROM table`

## Fix
Skip empty string fields in `mappingAndFilterToTableFields` (line
97-100):
```go
// Skip empty string fields
if fieldStr == "" {
    continue
}
```

## Behavior Changes
- `Fields("")` → SELECT * FROM table (uses default)
- `Fields("", "id")` → SELECT id FROM table (ignores empty string)
- `Fields("id", "", "nickname")` → SELECT id, nickname FROM table

## Tests
Added `Test_Issue4697` with 3 scenarios covering all cases above.

## Related
Fixes #4697
Ref #4703 (discovered during pagination test development)

2026-02-26 16:27:00 +08:00

..

testdata

fix issue #1412

2021-09-23 19:29:20 +08:00

gdb_converter.go

refactor(util/gconv): add Converter feature for more flexable and extensible type converting (#4107)

2025-03-06 23:04:26 +08:00

gdb_core_config.go

feat(database/gdb): add MaxIdleConnTime configuration for SetConnMaxIdleTime support (#4625)

2026-01-19 13:04:03 +08:00

gdb_core_ctx.go

fix(database/gdb): issue where the Count/Value/Array query logic was incompatible with the old version when users extended the returned result fields using the Select Hook (#3995)

2024-12-01 23:47:51 +08:00

gdb_core_link.go

add sharding feature for package gdb

2022-03-21 21:17:48 +08:00

gdb_core_stats.go

refactor(container): add default nil checker, rename RegisterNilChecker to SetNilChecker, migrate instance containers to type-safe generics (#4630)

2026-01-23 16:37:38 +08:00

gdb_core_structure.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_core_trace.go

database/gdb: remove duplicated SQL records in tracing events (#3659)

2024-06-25 21:11:36 +08:00

gdb_core_transaction.go

fix: version 2.9.2 (#4405)

2025-09-01 15:33:50 +08:00

gdb_core_txcore.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_core_underlying.go

fix(‎database/gdb):Fix panic handling in DoCommit to prevent blocking on database driver panics (#4423)

2026-01-16 12:43:52 +08:00

gdb_core_utility.go

feat(contrib/drivers/dm&pgsql&mssql&oracle): add Replace/LastInsertId features support for dm/pgsql/mssql/oracle (#4547)

2025-12-09 15:46:41 +08:00

gdb_core.go

refactor(container): add default nil checker, rename RegisterNilChecker to SetNilChecker, migrate instance containers to type-safe generics (#4630)

2026-01-23 16:37:38 +08:00

gdb_driver_default.go

feature/v2.2.0 (#2154)

2022-09-26 22:11:13 +08:00

gdb_driver_wrapper_db.go

feat(contrib/drivers/dm&pgsql&mssql&oracle): add Replace/LastInsertId features support for dm/pgsql/mssql/oracle (#4547)

2025-12-09 15:46:41 +08:00

gdb_driver_wrapper.go

feature/v2.2.0 (#2154)

2022-09-26 22:11:13 +08:00

gdb_func.go

fix(‎database/gdb): fix iTableName interface detection when using WithAll with .Scan on reflect.Value objects (#4606)

2026-01-15 21:23:07 +08:00

gdb_model_builder_where_prefix.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_builder_where.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_builder_whereor_prefix.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_builder_whereor.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_builder.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_cache.go

fix(database/gdb): Resolve the cache error overwriting caused by the use of fixed cache keys in pagination queries. (#4339)

2026-01-16 10:33:05 +08:00

gdb_model_delete.go

feat(database/gdb): Optimize SoftTime feature (#4559)

2025-12-12 15:14:21 +08:00

gdb_model_fields.go

refactor(database/gdb): add quote for FieldsPrefix (#4485)

2025-11-21 17:27:09 +08:00

gdb_model_hook.go

fix(database/gdb): Resolved the schema error in the database output log when using the database sharding feature (#4319)

2025-09-28 17:57:27 +08:00

gdb_model_insert.go

feat(database/gdb): Optimize SoftTime feature (#4559)

2025-12-12 15:14:21 +08:00

gdb_model_join.go

fix issue in Join stements with prefix specified for package gdb (#3151)

2023-11-20 20:47:26 +08:00

gdb_model_lock.go

feat(gdb/gdb_model_lock.go): gdb support lock update skip locked (#4607)

2026-01-15 13:27:25 +08:00

gdb_model_option.go

add golangci feature to guarantee codes quality (#2229)

2022-11-01 20:12:21 +08:00

gdb_model_order_group.go

refactor(database/gdb): simplify order and group by alias quoting (bu… (#4555)

2025-12-26 16:43:19 +08:00

gdb_model_select.go

fix(database/gdb): Raw SQL Count ignores Where condition (#4611)

2026-01-16 13:05:33 +08:00

gdb_model_sharding.go

feat(database/gdb): add sharding feature for schema and table (#4014)

2024-12-09 23:12:20 +08:00

gdb_model_soft_time.go

feat(database/gdb): Optimize SoftTime feature (#4559)

2025-12-12 15:14:21 +08:00

gdb_model_transaction.go

feat(database/gdb): add transaction propagation&isolation level&readonly features (#4013)

2024-12-07 14:01:31 +08:00

gdb_model_update.go

feat(database/gdb): Optimize SoftTime feature (#4559)

2025-12-12 15:14:21 +08:00

gdb_model_utility.go

fix(database/gdb): handle empty string in Fields() gracefully (#4700)

2026-02-26 16:27:00 +08:00

gdb_model_where_prefix.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_where.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_whereor_prefix.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_whereor.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model_with.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_model.go

fix(database/gdb): Resolve the cache error overwriting caused by the use of fixed cache keys in pagination queries. (#4339)

2026-01-16 10:33:05 +08:00

gdb_panic_recovery_test.go

fix(‎database/gdb):Fix panic handling in DoCommit to prevent blocking on database driver panics (#4423)

2026-01-16 12:43:52 +08:00

gdb_result.go

add structure logging handler for package glog (#2919)

2023-09-04 21:23:46 +08:00

gdb_schema.go

fix issue #1554

2022-02-16 00:26:06 +08:00

gdb_statement.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_type_record.go

refactor: interface{} to any and reflect.Ptr to reflect.Pointer (#4395)

2025-08-28 16:53:19 +08:00

gdb_type_result_scanlist.go

fix: disable specific staticcheck rules and update lint config (#4396)

2025-08-29 10:32:30 +08:00

gdb_type_result.go

fix(database/gdb): Fix GetArray return type and add Bools method (#4452)

2025-09-28 17:08:37 +08:00

gdb_z_core_config_external_test.go

feat(database/gdb): add MaxIdleConnTime configuration for SetConnMaxIdleTime support (#4625)

2026-01-19 13:04:03 +08:00

gdb_z_core_config_test.go

feat(database/gdb): add MaxIdleConnTime configuration for SetConnMaxIdleTime support (#4625)

2026-01-19 13:04:03 +08:00

gdb_z_example_test.go

chore: upgrade dependencies to latest versions and fix security vulne… (#4237)

2025-08-22 15:29:16 +08:00

gdb_z_mysql_internal_test.go

refactor(util/gconv): add Converter feature for more flexable and extensible type converting (#4107)

2025-03-06 23:04:26 +08:00

gdb.go

refactor(container): add default nil checker, rename RegisterNilChecker to SetNilChecker, migrate instance containers to type-safe generics (#4630)

2026-01-23 16:37:38 +08:00