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update syntax gram for kill, prepare and show stats_healthy #2880

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Merged
merged 4 commits into from
Jun 16, 2020
Merged

update syntax gram for kill, prepare and show stats_healthy #2880

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87d232c
update syntax gram for `kill`, `prepare` and `show stats_healthy`
eurekaka Jun 16, 2020
e09f191
Merge branch 'master' into syntax_gram
eurekaka Jun 16, 2020
1b61e4c
Update statistics.md
yikeke Jun 16, 2020
b524fc2
Merge branch 'master' into syntax_gram
ti-srebot Jun 16, 2020
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4 changes: 4 additions & 0 deletions sql-statements/sql-statement-kill.md
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Expand Up @@ -17,6 +17,10 @@ By design, this statement is not compatible with MySQL by default. This helps pr

![KillStmt](/media/sqlgram/KillStmt.png)

**KillOrKillTiDB:**

![KillOrKillTiDB](/media/sqlgram/KillOrKillTiDB.png)

## Examples

```sql
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4 changes: 4 additions & 0 deletions sql-statements/sql-statement-prepare.md
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Expand Up @@ -15,6 +15,10 @@ The `PREPARE` statement provides an SQL interface to server-side prepared statem

![PreparedStmt](/media/sqlgram/PreparedStmt.png)

**PrepareSQL:**

![PrepareSQL](/media/sqlgram/PrepareSQL.png)

## Examples

```sql
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12 changes: 6 additions & 6 deletions statistics.md
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Expand Up @@ -190,13 +190,13 @@ Currently, the `SHOW STATS_META` statement returns the following 6 columns:

You can use the `SHOW STATS_HEALTHY` statement to check the health state of tables and roughly estimate the accuracy of the statistics. When `modify_count` >= `row_count`, the health state is 0; when `modify_count` < `row_count`, the health state is (1 - `modify_count`/`row_count`) * 100.

The syntax is as follows. You can use `ShowLikeOrWhere` to filter the information you need:
The synopsis of `SHOW STATS_HEALTHY` is:

{{< copyable "sql" >}}
![ShowStatsHealthy](/media/sqlgram/ShowStatsHealthy.png)

```sql
SHOW STATS_HEALTHY [ShowLikeOrWhere];
```
and the synopsis of the `ShowLikeOrWhereOpt` part is:

![ShowLikeOrWhereOpt](/media/sqlgram/ShowLikeOrWhereOpt.png)

Currently, the `SHOW STATS_HEALTHY` statement returns the following 4 columns:

Expand Down Expand Up @@ -312,4 +312,4 @@ Syntax:
LOAD STATS 'file_name'
```

`file_name` is the file name of the statistics to be imported.
`file_name` is the file name of the statistics to be imported.