bourdon
ae87c38776
- Core engine with MemTable, SST, WAL - B+Tree indexing for SST files - Leveled compaction strategy - Multi-table database management - Schema validation and secondary indexes - Query builder with complex conditions - Web UI with HTMX for data visualization - Command-line tools for diagnostics
70 lines
1.3 KiB
Go
70 lines
1.3 KiB
Go
package commands
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import (
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"fmt"
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"log"
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"code.tczkiot.com/srdb"
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)
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// CheckSeq 检查特定序列号的数据
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func CheckSeq(dbPath string) {
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db, err := srdb.Open(dbPath)
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if err != nil {
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log.Fatal(err)
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}
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defer db.Close()
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table, err := db.GetTable("logs")
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if err != nil {
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log.Fatal(err)
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}
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// Check seq 1
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row1, err := table.Get(1)
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if err != nil {
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fmt.Printf("Error getting seq=1: %v\n", err)
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} else if row1 == nil {
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fmt.Println("Seq=1: NOT FOUND")
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} else {
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fmt.Printf("Seq=1: FOUND (time=%d)\n", row1.Time)
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}
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// Check seq 100
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row100, err := table.Get(100)
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if err != nil {
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fmt.Printf("Error getting seq=100: %v\n", err)
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} else if row100 == nil {
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fmt.Println("Seq=100: NOT FOUND")
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} else {
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fmt.Printf("Seq=100: FOUND (time=%d)\n", row100.Time)
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}
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// Check seq 729
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row729, err := table.Get(729)
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if err != nil {
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fmt.Printf("Error getting seq=729: %v\n", err)
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} else if row729 == nil {
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fmt.Println("Seq=729: NOT FOUND")
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} else {
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fmt.Printf("Seq=729: FOUND (time=%d)\n", row729.Time)
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}
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// Query all records
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result, err := table.Query().Rows()
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if err != nil {
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log.Fatal(err)
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}
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count := result.Count()
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fmt.Printf("\nTotal rows from Query: %d\n", count)
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if count > 0 {
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first, _ := result.First()
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if first != nil {
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data := first.Data()
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fmt.Printf("First row _seq: %v\n", data["_seq"])
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}
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}
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}
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