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Code Issues Releases Wiki Activity

improve sql parser for informix skip/first clause.

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This commit is contained in:
wenshao
2016-10-17 19:22:47 +08:00
parent 4f612ec2e0
commit 82cdd301c4
15 changed files with 359 additions and 31 deletions
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src/main/java/com/alibaba/druid/sql/parser/SQLSelectParser.java
+23
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@@ -173,6 +173,20 @@ public class SQLSelectParser extends SQLParser {
lexer.nextToken();
}
if (JdbcConstants.INFORMIX.equals(dbType)) {
if (identifierEquals("SKIP")) {
lexer.nextToken();
SQLExpr offset = this.exprParser.primary();
queryBlock.setOffset(offset);
}
if (identifierEquals("FIRST")) {
lexer.nextToken();
SQLExpr first = this.exprParser.primary();
queryBlock.setFirst(first);
}
}
if (lexer.token() == Token.DISTINCT) {
queryBlock.setDistionOption(SQLSetQuantifier.DISTINCT);
lexer.nextToken();
@@ -541,6 +555,15 @@ public class SQLSelectParser extends SQLParser {
}
public void parseFetchClause(SQLSelectQueryBlock queryBlock) {
if (identifierEquals("OFFSET") || lexer.token() == Token.OFFSET) {
lexer.nextToken();
SQLExpr offset = this.exprParser.primary();
queryBlock.setOffset(offset);
if (identifierEquals("ROW") || identifierEquals("ROWS")) {
lexer.nextToken();
}
}
if (lexer.token() == Token.FETCH) {
lexer.nextToken();
if (lexer.token() == Token.FIRST) {