If you omit a table name (that is, you specify NULL or an empty string), information is returned for all tables in the schema specified.

如果您省略了表名(即指定NULL或空字符串)，那么为指定的模式中的所有表返回信息。

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If the schema is NULL or the empty string, the procedure restores the schema to the name from where it was backed up.

如果模式是NULL或空字符串，那么这个过程采用备份时的模式名进行恢复。

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packageName: The name of the package that will contain the EGL build file.(if this is null or an empty string, the default package will be used)

将包含这个EGL构建文件的包的名称（如果是null或者空的字符串，将使用默认的包）

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If the resolved context variable content is null, no replacement occurs and the variable name remains unchanged in the query string (including the "%" signs).

如果解析后的上下文变量内容为空，则不会发生替换，并且变量名称在查询字符串中保持不变(包括“%”符号)。

youdao

If the resolved context variable content is null, no replacement occurs and the variable name remains unchanged in the query string (including the "%" signs).

如果解析后的上下文变量内容为空，则不会发生替换，并且变量名称在查询字符串中保持不变(包括“%”符号)。

youdao