# Window Functions ## Index ### Row Number Function
${item.topic} | ${item.topic} | ${item.topic}
### Rank Functions
${item.topic} | ${item.topic} | ${item.topic}
### Lead or Lag Functions
${item.topic} | ${item.topic} | ${item.topic}
### Nth Value Functions
${item.topic} | ${item.topic} | ${item.topic}
### Other Window Functions
${item.topic} | ${item.topic} | ${item.topic}
## Details Click on the header of the function to switch between railroad diagram and BNF. Non-standard syntax is marked in green. Compatibility-only non-standard syntax is marked in red, don't use it unless you need it for compatibility with other databases or old versions of H2. ## Row Number Function ### ${item.topic}
    ${item.syntax}
${item.railroad} ${item.text} Example: ${item.example} ## Rank Functions ### ${item.topic}
    ${item.syntax}
${item.railroad} ${item.text} Example: ${item.example} ## Lead or Lag Functions ### ${item.topic}
    ${item.syntax}
${item.railroad} ${item.text} Example: ${item.example} ## Nth Value Functions ### ${item.topic}
    ${item.syntax}
${item.railroad} ${item.text} Example: ${item.example} ## Other Window Functions ### ${item.topic}
    ${item.syntax}
${item.railroad} ${item.text} Example: ${item.example}