diff --git a/src/sqlParser.jison b/src/sqlParser.jison
index 7cff3e8..7387ee2 100644
--- a/src/sqlParser.jison
+++ b/src/sqlParser.jison
@@ -50,6 +50,7 @@ IN return 'IN'
SOUNDS return 'SOUNDS'
LIKE return 'LIKE'
ESCAPE return 'ESCAPE'
+CAST return 'CAST'
REGEXP return 'REGEXP'
IS return 'IS'
UNKNOWN return 'UNKNOWN'
@@ -343,6 +344,9 @@ case_when_else
case_when
: CASE case_expr_opt when_then_list case_when_else END { $$ = { type: 'CaseWhen', caseExprOpt: $2, whenThenList: $3, else: $4 } }
;
+cast
+ : CAST '(' expr AS IDENTIFIER ')' { $$ = { type: 'Cast', expr: $3, castTo: $5 } }
+ ;
simple_expr_prefix
: '+' simple_expr %prec UPLUS { $$ = { type: 'Prefix', prefix: $1, value: $2 } }
| '-' simple_expr %prec UMINUS { $$ = { type: 'Prefix', prefix: $1, value: $2 } }
@@ -361,6 +365,7 @@ simple_expr
| EXISTS '(' selectClause ')' { $$ = { type: 'SubQuery', value: $3, hasExists: true } }
| '{' identifier expr '}' { $$ = { type: 'IdentifierExpr', identifier: $2, value: $3 } }
| case_when { $$ = $1 }
+ | cast { $$ = $1 }
;
bit_expr
: simple_expr { $$ = $1 }
diff --git a/src/stringify.js b/src/stringify.js
index 57ea74e..a5385ef 100644
--- a/src/stringify.js
+++ b/src/stringify.js
@@ -225,6 +225,14 @@ Sql.prototype.travelCaseWhen = function(ast) {
}
this.appendKeyword('end');
};
+Sql.prototype.travelCast = function(ast) {
+ this.appendKeyword('cast');
+ this.append('(', true, true);
+ this.travel(ast.expr);
+ this.appendKeyword('as');
+ this.append(ast.castTo);
+ this.append(')', true);
+};
Sql.prototype.travelPrefix = function(ast) {
this.appendKeyword(ast.prefix);
this.travel(ast.value);
diff --git a/test/main.test.js b/test/main.test.js
index 834d3f1..2151b7c 100644
--- a/test/main.test.js
+++ b/test/main.test.js
@@ -411,4 +411,19 @@ describe('select grammar support', function() {
it('bugfix table alias2', function() {
testParser('select a.* from a t1 join b t2 on t1.a = t2.a')
})
+
+ it('CAST support issue #9', function() {
+ testParser(`select
+ concat(dsw_cluster_name,',',logic_pod_name) as event_obj,
+ concat(dsw_cluster_name,',',logic_pod_name, ' PFC STORM. 详情: ',
+ '流量突跃 ', cast(FLOW_RX_BPS_RATE100 as int), '%(RX)',
+ '; ', cast(FLOW_TX_BPS_RATE100 as int), '%(TX)',
+ '; PFC 突增 ', cast(PFC_RX_PPS_RATE*100 as int), '%(RECV)') as brief
+ from SOURCE_BASIC_EVENT_POD_FLOW_AND_PFC_TREND
+ where win_end >= '2020-05-19 21:14:12'
+ and win_end < '2020-05-20 21:14:12'
+ and PFC_RX_PPS_RATE >= 100
+ and (FLOW_RX_BPS_RATE <= -0.2 and FLOW_TX_BPS_RATE <= -0.2)
+ `)
+ })
});
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