*: remove the limit on single column data size (#13949) (#13953) (#13959

)
pingcap · Jun 21, 2023 · 4c4f5af · 4c4f5af
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diff --git a/data-type-string.md b/data-type-string.md
@@ -61,7 +61,16 @@ MEDIUMTEXT [CHARACTER SET charset_name] [COLLATE collation_name]
 
 ### `LONGTEXT` type
 
-The `LONGTEXT` type is similar to the [`TEXT` type](#text-type). The difference is that the maximum column length of `LONGTEXT` is 4,294,967,295. But due to the [Limitation on a single column in TiDB](/tidb-limitations.md#limitation-on-a-single-column), the maximum storage size of a single column in TiDB is 6 MB.
+<CustomContent platform="tidb">
+
+The `LONGTEXT` type is similar to the [`TEXT` type](#text-type). The difference is that the maximum column length of `LONGTEXT` is 4,294,967,295. But due to the limitation of [`txn-entry-size-limit`](/tidb-configuration-file.md#txn-entry-size-limit-new-in-v50), the maximum storage size of a single row in TiDB is 6 MiB by default and can be increased to 120 MiB by changing the configuration.
+
+</CustomContent>
+<CustomContent platform="tidb-cloud">
+
+The `LONGTEXT` type is similar to the [`TEXT` type](#text-type). The difference is that the maximum column length of `LONGTEXT` is 4,294,967,295. But due to the limitation of [`txn-entry-size-limit`](https://docs.pingcap.com/tidb/stable/tidb-configuration-file#txn-entry-size-limit-new-in-v50), the maximum storage size of a single row in TiDB is 6 MiB by default and can be increased to 120 MiB by changing the configuration.
+
+</CustomContent>
 
 ```sql
 LONGTEXT [CHARACTER SET charset_name] [COLLATE collation_name]
@@ -109,7 +118,16 @@ MEDIUMBLOB
 
 ### `LONGBLOB` type
 
-The `LONGBLOB` type is similar to the [`BLOB` type](#blob-type). The difference is that the maximum column length of `LONGBLOB` is 4,294,967,295. But due to the [Limitation on a single column in TiDB](/tidb-limitations.md#limitation-on-a-single-column), the maximum storage size of a single column in TiDB is 6 MB.
+<CustomContent platform="tidb">
+
+The `LONGBLOB` type is similar to the [`BLOB` type](#blob-type). The difference is that the maximum column length of `LONGBLOB` is 4,294,967,295. But due to the limitation of [`txn-entry-size-limit`](/tidb-configuration-file.md#txn-entry-size-limit-new-in-v50), the maximum storage size of a single row in TiDB is 6 MiB by default and can be increased to 120 MiB by changing the configuration.
+
+</CustomContent>
+<CustomContent platform="tidb-cloud">
+
+The `LONGBLOB` type is similar to the [`BLOB` type](#blob-type). The difference is that the maximum column length of `LONGBLOB` is 4,294,967,295. But due to the limitation of [`txn-entry-size-limit`](https://docs.pingcap.com/tidb/stable/tidb-configuration-file#txn-entry-size-limit-new-in-v50), the maximum storage size of a single row in TiDB is 6 MiB by default and can be increased to 120 MiB by changing the configuration.
+
+</CustomContent>
 
 ```sql
 LONGBLOB

diff --git a/tidb-limitations.md b/tidb-limitations.md
@@ -52,12 +52,6 @@ This document describes the common usage limitations of TiDB, including the maxi
 |:----------|:----------|
 | Size       | 6 MB by default. You can adjust the size limit via the [`txn-entry-size-limit`](/tidb-configuration-file.md#txn-entry-size-limit-new-in-v50) configuration item. |
 
-## Limitation on a single column
-
-| Type       | Upper limit   |
-|:----------|:----------|
-| Size       | 6 MB       |
-
 ## Limitations on string types
 
 | Type       | Upper limit   |