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refine the description of EXPLAIN #16926

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Apr 7, 2024
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refine the description of EXPLAIN #16926

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refine the description of EXPLAIN
Oreoxmt Mar 28, 2024
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Oreoxmt Apr 7, 2024
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2 changes: 1 addition & 1 deletion sql-statements/sql-statement-explain.md
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Expand Up @@ -6,7 +6,7 @@ aliases: ['/docs-cn/dev/sql-statements/sql-statement-explain/','/docs-cn/dev/ref

# EXPLAIN

`EXPLAIN` 语句仅用于显示查询的执行计划，而不执行查询。`EXPLAIN ANALYZE` 可执行查询，补充 `EXPLAIN` 语句。如果 `EXPLAIN` 的输出与预期结果不匹配，可考虑在查询的每个表上执行 `ANALYZE TABLE`。
`EXPLAIN` 语句仅用于显示查询的执行计划，而不执行查询。该语句为 `EXPLAIN ANALYZE` 语句的补充，后者会执行查询。如果 `EXPLAIN` 的输出与预期结果不匹配，可考虑在查询的每个表上执行 `ANALYZE TABLE`，以确保表统计信息是最新的。

语句 `DESC` 和 `DESCRIBE` 是 `EXPLAIN` 的别名。`EXPLAIN <tableName>` 的替代用法记录在 [`SHOW [FULL] COLUMNS FROM`](/sql-statements/sql-statement-show-columns-from.md) 下。

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