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PrestoViewGenerator.java
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36 lines (31 loc) · 1.19 KB
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package sqlancer.presto.gen;
import sqlancer.Randomly;
import sqlancer.common.query.ExpectedErrors;
import sqlancer.common.query.SQLQueryAdapter;
import sqlancer.presto.PrestoErrors;
import sqlancer.presto.PrestoGlobalState;
import sqlancer.presto.PrestoToStringVisitor;
public final class PrestoViewGenerator {
private PrestoViewGenerator() {
}
public static SQLQueryAdapter generate(PrestoGlobalState globalState) {
int nrColumns = Randomly.smallNumber() + 1;
StringBuilder sb = new StringBuilder("CREATE ");
sb.append("VIEW ");
sb.append(globalState.getSchema().getFreeViewName());
sb.append("(");
for (int i = 0; i < nrColumns; i++) {
if (i != 0) {
sb.append(", ");
}
sb.append("c");
sb.append(i);
}
sb.append(") AS ");
sb.append(PrestoToStringVisitor.asString(PrestoRandomQuerySynthesizer.generateSelect(globalState, nrColumns)));
ExpectedErrors errors = new ExpectedErrors();
PrestoErrors.addExpressionErrors(errors);
PrestoErrors.addGroupByErrors(errors);
return new SQLQueryAdapter(sb.toString(), errors, true, false);
}
}