Add attributes from to node to parent - xslt

Question

After reading a lot about this question already, I still do not find final solution for my problem as I am an absolut beginner with xsl.
I want to add all attributes of child nodes to parent level.
This is what I have:
<rankings date="2021-03-15">
<ranking rank="1" rank_change="0" points="12008">
<player initials="" nationality="SRB" last_name="Djokovic" first_name="Novak" id="7" display_name="Novak Djokovic"/>
</ranking>
<ranking rank="2" rank_change="1" points="9940">
<player initials="" nationality="RUS" last_name="Medvedev" first_name="Daniil" id="35844" display_name="Daniil Medvedev"/>
</ranking>
<ranking rank="3" rank_change="-1" points="9670">
<player initials="" nationality="ESP" last_name="Nadal" first_name="Rafael" id="4" display_name="Rafael Nadal"/>
</ranking>
</rankings>
This is what I tried (miss identity tranform I think)
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="rankings">
<data>
<xsl:apply-templates select="*"/>
</data>
</xsl:template>
<xsl:template match="ranking | player">
<row>
<xsl:apply-templates select="#* | node()"/>
</row>
</xsl:template>
<xsl:template match="ranking/#* | player/#*">
<xsl:element name="{name(.)}">
<xsl:value-of select="."/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>
With following result:
<data>
<row>
<rank>1</rank>
<rank_change>0</rank_change>
<points>12008</points>
<row>
<initials/>
<nationality>SRB</nationality>
<last_name>Djokovic</last_name>
<first_name>Novak</first_name>
<id>7</id>
<display_name>Novak Djokovic</display_name>
</row>
</row>
</data>
This is my goal:
<data>
<row>
<rank>1</rank>
<rank_change>0</rank_change>
<points>12008</points>
<initials/>
<nationality>SRB</nationality>
<last_name>Djokovic</last_name>
<first_name>Novak</first_name>
<id>7</id>
<display_name>Novak Djokovic</display_name>
</row>
</data>
I hope one of you can help me with this.
Cheers,
Phil

Answer 1

try splitting ranking and player in its own template
<xsl:template match="ranking">
<row>
<xsl:apply-templates select="#* | node()"/>
</row>
</xsl:template>
<xsl:template match="player">
<xsl:apply-templates select="#* | node()"/>
</xsl:template>
Result:
<data>
<row>
<rank>1</rank>
<rank_change>0</rank_change>
<points>12008</points>
<initials/>
<nationality>SRB</nationality>
<last_name>Djokovic</last_name>
<first_name>Novak</first_name>
<id>7</id>
<display_name>Novak Djokovic</display_name>
</row>
<row>
<rank>2</rank>
<rank_change>1</rank_change>
<points>9940</points>
<initials/>
<nationality>RUS</nationality>
<last_name>Medvedev</last_name>
<first_name>Daniil</first_name>
<id>35844</id>
<display_name>Daniil Medvedev</display_name>
</row>
<row>
<rank>3</rank>
<rank_change>-1</rank_change>
<points>9670</points>
<initials/>
<nationality>ESP</nationality>
<last_name>Nadal</last_name>
<first_name>Rafael</first_name>
<id>4</id>
<display_name>Rafael Nadal</display_name>
</row>
</data>

Answer 2

If I am guessing correctly what your real goal is, you could do simply:
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="rankings">
<data>
<xsl:for-each select="ranking">
<row>
<xsl:for-each select=".//#*">
<xsl:element name="{name(.)}">
<xsl:value-of select="."/>
</xsl:element>
</xsl:for-each>
</row>
</xsl:for-each>
</data>
</xsl:template>
</xsl:stylesheet>