update docs

Author: qianyiwen2019

docs/en/config.md

@@ -34,10 +34,10 @@ url=mysql://user1:abc%25%24%23%3F%[email protected]:3307?ssl-mode=disabled
 
 | Config | Description | Example | Default |
 | :-------- | :-------- | :-------- | :-------- |
-| do_dbs | databases to be synced | db_1,db_2*,\`db*&#\` | - |
-| ignore_dbs | databases to be filtered | db_1,db_2*,\`db*&#\` | - |
-| do_tbs | tables to be synced | db_1.tb_1,db_2*.tb_2*,\`db*&#\`.\`tb*&#\` | - |
-| ignore_tbs | tables to be filtered | db_1.tb_1,db_2*.tb_2*,\`db*&#\`.\`tb*&#\` | - |
+| do_dbs | databases to be synced, takes union with do_tbs | db_1,db_2*,\`db*&#\` | - |
+| ignore_dbs | databases to be filtered, takes union with ignore_tbs | db_1,db_2*,\`db*&#\` | - |
+| do_tbs | tables to be synced, takes union with do_dbs | db_1.tb_1,db_2*.tb_2*,\`db*&#\`.\`tb*&#\` | - |
+| ignore_tbs | tables to be filtered, takes union with ignore_dbs | db_1.tb_1,db_2*.tb_2*,\`db*&#\`.\`tb*&#\` | - |
 | ignore_cols | table columns to be filtered | json:[{"db":"db_1","tb":"tb_1","ignore_cols":["f_2","f_3"]},{"db":"db_2","tb":"tb_2","ignore_cols":["f_3"]}] | - |
 | do_events | events to be synced | insert,update,delete | - |
 | do_ddls | ddls to be synced, for mysql cdc tasks | create_database,drop_database,alter_database,create_table,drop_table,truncate_table,rename_table,alter_table,create_index,drop_index | - |
@@ -58,6 +58,7 @@ url=mysql://user1:abc%25%24%23%3F%[email protected]:3307?ssl-mode=disabled
 
 - ignore_tbs + ignore_tbs > do_tbs + do_dbs.
 - If a table matches both **ignore** configs and **do** configs, the table will be filtered.
+- If both do_tbs and do_dbs are configured, **the filter is the union of both**. If both ignore_tbs and ignore_dbs are configured, **the filter is the union of both**.
 
 ## Wildcard
 

docs/en/tutorial/prerequisites.md

@@ -3,7 +3,7 @@
 
 - Set images
 ```
-export APE_DTS_IMAGE="docker.io/apecloud/ape-dts:2.0.21"
+export APE_DTS_IMAGE="docker.io/apecloud/ape-dts:2.0.22"
 export MYSQL_IMAGE="mysql:5.7.40"
 export POSTGRES_IMAGE="postgis/postgis:15-3.4"
 export REDIS_IMAGE="redis:7.0"

docs/zh/config.md

@@ -33,10 +33,10 @@ url=mysql://user1:abc%25%24%23%3F%[email protected]:3307?ssl-mode=disabled
 
 | 配置 | 作用 | 示例 | 默认 |
 | :-------- | :-------- | :-------- | :-------- |
-| do_dbs | 需同步的库 | db_1,db_2*,\`db*&#\` | - |
-| ignore_dbs | 需过滤的库 | db_1,db_2*,\`db*&#\` | - |
-| do_tbs | 需同步的表 | db_1.tb_1,db_2*.tb_2*,\`db*&#\`.\`tb*&#\` | - |
-| ignore_tbs | 需过滤的表 | db_1.tb_1,db_2*.tb_2*,\`db*&#\`.\`tb*&#\` | - |
+| do_dbs | 需同步的库，和 do_tbs 取并集 | db_1,db_2*,\`db*&#\` | - |
+| ignore_dbs | 需过滤的库，和 ignore_tbs 取并集 | db_1,db_2*,\`db*&#\` | - |
+| do_tbs | 需同步的表，和 do_dbs 取并集 | db_1.tb_1,db_2*.tb_2*,\`db*&#\`.\`tb*&#\` | - |
+| ignore_tbs | 需过滤的表，和 ignore_dbs 取并集 | db_1.tb_1,db_2*.tb_2*,\`db*&#\`.\`tb*&#\` | - |
 | ignore_cols | 某些表需过滤的列 | json:[{"db":"db_1","tb":"tb_1","ignore_cols":["f_2","f_3"]},{"db":"db_2","tb":"tb_2","ignore_cols":["f_3"]}] | - |
 | do_events | 需同步的事件 | insert、update、delete | - |
 | do_ddls | 需同步的 ddl，适用于 mysql cdc 任务 | create_database,drop_database,alter_database,create_table,drop_table,truncate_table,rename_table,alter_table,create_index,drop_index | - |
@@ -55,8 +55,9 @@ url=mysql://user1:abc%25%24%23%3F%[email protected]:3307?ssl-mode=disabled
 
 ## 优先级
 
-- ignore_tbs + ignore_tbs > do_tbs + do_dbs。
+- ignore_tbs + ignore_dbs > do_tbs + do_dbs。
 - 如果某张表既匹配了 ignore 项，又匹配了 do 项，则该表会被过滤。
+- 如果 do_tbs 和 do_dbs 都有配置，**则同步范围为二者并集**，如果 ignore_tbs 和 ignore_dbs 均有配置，**则过滤范围为二者并集**。
 
 ## 通配符