From 09a5275496099ccd559f1645ecb7682f2c7816c1 Mon Sep 17 00:00:00 2001 From: Matthew Lilius Date: Tue, 19 May 2020 20:56:22 -0400 Subject: [PATCH] Added support for simple casts --- src/sqlParser.jison | 5 +++++ src/stringify.js | 8 ++++++++ test/main.test.js | 15 +++++++++++++++ 3 files changed, 28 insertions(+) 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) + `) + }) }); pFad - Phonifier reborn

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