rvflash / awql-parser

AWQL parser / lexers

Awql Parser

Parser for parsing AWQL SELECT, DESCRIBE, SHOW and CREATE VIEW statements.

Only the first statement is supported by Adwords API, the others are proposed by the AWQL command line tool.

Examples

Unknown single statement.

q := `SELECT CampaignId, CampaignName FROM CAMPAIGN_PERFORMANCE_REPORT;`
stmt, _ := awql.NewParser(strings.NewReader(q)).ParseRow()
if stmt, ok := stmt.(awql.SelectStmt); ok {
    fmt.Println(stmt.SourceName())
    // Output: CAMPAIGN_PERFORMANCE_REPORT
}

Select statement.

q := `SELECT AdGroupName FROM ADGROUP_PERFORMANCE_REPORT;`
stmt, _ := awql.NewParser(strings.NewReader(q)).ParseSelect()
fmt.Printf("Gets the column named %v from %v.\n", stmt.Columns()[0].Name(), stmt.SourceName())
// Output: Gets the column named AdGroupName from ADGROUP_PERFORMANCE_REPORT.

Multiple statements.

q := `SELECT CampaignName FROM CAMPAIGN_PERFORMANCE_REPORT ORDER BY 1 LIMIT 5\GDESC ADGROUP_PERFORMANCE_REPORT AdGroupName;`
stmts, _ := awql.NewParser(strings.NewReader(q)).Parse()
for _, stmt := range stmts {
    switch stmt.(type) {
    case awql.SelectStmt:
        fmt.Println(stmt.(awql.SelectStmt).OrderList()[0].Name())
    case awql.DescribeStmt:
        fmt.Println(stmt.(awql.DescribeStmt).SourceName())
        fmt.Println(stmt.(awql.DescribeStmt).Columns()[0].Name())
    }
}
// Output:
// CampaignName
// ADGROUP_PERFORMANCE_REPORT
// AdGroupName